What Gasoline Does The Stihl Chainsaw Use

Gasoline selection

Many are interested in what gasoline the chainsaw works best on. Most models require clean, high-quality fuel with an octane rating of no higher than 90. Sometimes there are recommendations on the network to mix 92 or 93 gasoline with 95 to increase its efficiency. In no case should this be done, since higher-octane grades are often faked, and no one will dilute A92 or AI92 grades.

Therefore, when choosing which gasoline to pour into the chainsaw in the domestic market, it is recommended to use just such a fuel. It is necessary to ensure that the gasoline is fresh enough, since during long-term storage it begins to release resins and other elements that deteriorate quality. Manufacturers recommend using:

  • Chainsaw Stihl (Stihl) 180. it is better to refuel with gasoline A90 and higher;
  • Stihl 250. runs on gasoline with an octane rating of at least 90. Do not use fuel with an ethanol content exceeding 10%;
  • Partner. use only unleaded gasoline with an octane rating of at least 90;
  • Husqvarna. gasoline with an octane rating of at least 90, it is allowed to use pure fuel or with the addition of tetraethyl lead. Catalyzed engines require a fuel / oil mixture made from unleaded gasoline.

As a rule, the owners of such tools use AI92 gasoline, which fully meets the requirements of manufacturers. However, for most domestic chainsaws, A72 or A80 gasoline is quite suitable. It must also be borne in mind that the failure of the chainsaw due to the use of low-quality fuel is not a warranty case.

Storage conditions for the finished mixture

Most users usually prepare the fuel mixture for future use. This is due to the saving of time. it is believed that it is more correct to mix a large volume once, and then simply add fuel to the tool tank. This point of view is valid, but with important limitations. The finished mixture should not be stored for too long, as irreversible changes occur in it.

Ideally, it should only be cooked for one day, but this is considered too irrational by many. The permissible shelf life depends on the ratio and grade of the components. Most experts recommend not storing the mixture for more than 3 months. It is recommended to use metal canisters and keep the mixture under a canopy, away from direct sunlight.

How to mix the fuel mixture correctly?

The mixing process is quite simple. you need to measure a certain amount of oil and pour it into the appropriate volume of gasoline. It is necessary to prepare a clean container for mixing. Usually, plastic canisters are used, which are quite suitable for this purpose. However, some species have a serious drawback. they accumulate static electricity, which can lead to the formation of a spark and ignite the fuel mixture.

The best option is to use a special canister with two necks, into which gasoline and oil are poured, but they are quite expensive. For accurate dosage of oil, many use medical syringes with marked divisions. The more carefully the amount of the mixture is measured, the longer the service life and the higher the quality of the tool.

What fuel to use for a chainsaw?

Choosing the right fuel is an important and significant issue. The only correct approach to its solution is a careful study of the user manual, which indicates the type and brand of fuel, the proportions of mixing gasoline and oil, and also reflects all the features of this tool. Modern standards require the use of high-octane refined fuels and special types of engine oil.

Refueling your chainsaw

For beginners, the question of how to refuel a chainsaw is especially relevant. However, the refueling process itself is not at all difficult. The main task is to formulate the fuel / oil mixture in the correct proportions. They are indicated in the instructions for the tool. Before refueling, you should carefully study the information given by the manufacturer in order to exclude the possibility of errors in the composition of the fuel mixture.

Oil selection

The chainsaw uses two types of oil. motor oil and chain (adhesive) oil. They should not be confused because the tasks they perform are different from each other. Any gear oil can be used to lubricate the chain, although manufacturers always recommend using the same materials. Engine oil requirements are stricter. On this issue, all manufacturers are unanimous. you should use the oil of the same company that made the saw.

Two-stroke engines lack a lubrication system that is replaced by the presence of some material in the fuel. The carburetor injects a fuel-oil mist, which simultaneously lubricates all parts. The residues are then burned off in the cylinder. If there are no specific instructions in the instructions, any two-stroke oil can be used.

For different tool models, manufacturers recommend:

  • For the Stihl 180 chainsaw, the best option is STIHL HP, HP SUPER or HP ULTRA oil;
  • Stihl 250. use STIHL HP, HP SUPER or HP ULTRA correctly, STIHL HP ULTRA is the most effective;
  • Partner. any two-stroke oil. Do not use automotive or marine oil, it will damage the engine;
  • Husqvarna. Manufacturer recommends the use of HUSQVARNA two-stroke oil. Do not use oil for 4-stroke engines or water-cooled 2-stroke engines.

Gasoline to oil ratio

The standard ratio of oil to gasoline, which is relevant for most chainsaws, is 1 to 50. This means that 20 ml of oil must be added to 1 liter of gasoline. However, each manufacturer has its own requirements for the composition of the fuel mixture, which are due to the design of the engine, the peculiarities of its parameters and other factors. It is impossible to determine on your own what proportions are best suited for a given instrument.

Complete and accurate information can only be obtained from the user manual. If it does not contain any instructions regarding the composition of the fuel mixture, then generally accepted practice should be followed and make it in a ratio of 1: 50. There are other options, from 1: 20 to 1: 50.

Figure 3. The ratio of oil and gasoline for the fuel mixture

How to properly refuel your chainsaw to extend its life?

The engine of a modern chainsaw is a one- or two-cylinder carburetor engine. As a rule, two-stroke models are installed, although four-stroke models are also occasionally found. The rotational speed of the working shaft reaches 13.5 thousand revolutions, which puts forward stringent requirements for the quality and composition of the fuel mixture.

Manufacturers inform users in sufficient detail how to refuel a chainsaw, but for many this issue remains not entirely clear. Let’s take a closer look.

Chainsaw device features

The chainsaw is a chain hand tool, the cutting body of which is driven by a carburetor engine.

Typically, this is a single cylinder two-stroke engine.

This design is simple, economical, capable of working in any position.

The structure of the saw, in addition to the engine, includes:

  • Carburetor;
  • Tire;
  • Cutting body (chain);
  • Starter;
  • Centrifugal clutch;
  • Ignition, fuel supply system, air filters;
  • Chain lubrication system;
  • Muffler;
  • Grips.
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The motor can be positioned vertically (heavy duty professional models) or horizontally (light household tools). Heavy-duty saws are used for felling and crosscutting trunks and have a large frame size. Lightweight saws are used for cutting branches or sawing wood, and are usually purchased by private house owners, farmers, gardeners, etc.

The design of the tool is simple, which is a guarantee of high strength and reliability. The engine shaft drives the drive sprocket through the clutch, which moves the chain along the tire using the drive sprocket. The two-stroke engine does not need a camshaft, valve system and other elements, which also contributes to increased structural reliability.

The centrifugal clutch is equipped with two clutches, which at low shaft speeds are pressed against each other, and with an increase in rotation speed, under the action of centrifugal force, they are pressed against the outer part of the clutch and drive the drive sprocket. The power of the motor determines the type of chain. the more powerful the saw, the greater the chain pitch (the distance between the teeth, which determines the performance of the tool).

What gasoline to pour into a popular brand chainsaw

Chainsaw is a convenient unit that can solve a lot of everyday problems. Powered by fuel that you need to prepare yourself just before pouring it into the tank. Those who have purchased a functional device for the first time are interested in the question of which gasoline to pour into the chainsaw. Avoiding breakdowns and extending the life of the device is possible only if the manufacturer’s recommendations specified in the instructions are followed.

What gasoline to fill?

Modern brands of chainsaws (Husqvarna, Partner) from foreign manufacturers will run smoothly on AI-92 gasoline. it will ideally match the engine. The user manual may also show grade 95, but this must be filled with care. The quality of this gasoline is currently being questioned, its octane number is increased with the help of various additives. This is detrimental to the chainsaw engine, which can lead to overhaul of the unit. And its cost will be at least half the cost of a new model, excluding spare parts to be replaced.

Gasoline and oil proportions

Due to the two-stroke type of engine, fuel is purchased separately in pure form, and then mixed with oil intended specifically for this engine version. Most experienced users mix the substances in proportions 1:50. In the photo you can see the popular high quality products used for the preparation of the fuel mixture.

Important points to observe:

  • Domestic chainsaws (Ural, Stihl, Druzhba) work with an oil component of the M8-B, M-12TPU, M8-B, TP, MGD-14M brands, sometimes foreign versions can be used; the recommended proportion is 100 g of oil per 2.5 liters of AI-80 gasoline;
  • Foreign models (Husqvarna, Partner) run on foreign-made oils (1:50 or 1: 40), differ in a minimum consumption.

How to properly prepare the fuel mixture

When purchasing gasoline for a chainsaw and oil, you should think about additional accessories. To measure and the ability to pour the mixture into the chainsaw, use the following tools:

  • Breeding container (plastic or metal),
  • Syringe,
  • Measuring bottle (suitable for measuring gasoline),
  • Dispenser,
  • Watering can (pour into the chainsaw).

A very convenient thing is a special bottle with a dispenser from the Stihl brand (pictured), which allows you to perform all actions accurately and quickly, accurately measuring the right amount of each substance. When choosing gasoline for the Stihl chainsaw (Druzhba, Husqvarna, Partner), you should pay special attention to the second component.

Oils from different manufacturers have variations in shades. HP’s products are red, the premium synthetic segment is mostly green. If you take gasoline for a Husqvarna chainsaw, then the oil should be of the appropriate brand, not cheap (green or blue in color). You can see the process of mixing fuel.

Useful Tips

Experts and manufacturers do not recommend storing a large volume of fuel and storing it for a long time. Oil and gasoline can behave differently in the mixture, it all depends on the brand, quality, degree of additives and additives. Oxidation and crystallization processes take place. The result can be disastrous and incur additional financial costs for the user: incorrect operation or engine failure.

Gasoline consumption and operating time

An important question is the gasoline consumption of the chainsaw, because the user must understand what to count on.

The volume of the fuel tanks is approximately 0.5 liters. When the power of the device is 2 kW, the consumption of petrol and oil will be about 1.2 l / h. Translating into a language understandable to the user. for about 30 minutes, the chainsaw can work in uninterrupted mode at maximum speed. Less powerful devices have a smaller tank volume, gasoline consumption is controlled by the owner independently.

Over time, you will learn how to independently service this household unit. The main thing is to keep it working and use only high-quality fuel. It is necessary to mix in compliance with safety rules so as not to damage your health or the environment.

Helpful hints:

  • Sometimes it is better to pour a little oil than to regret it. If you give a little more oil than indicated in the instructions, then nothing terrible will happen. The formation of carbon deposits is possible in cases of a large amount of oil and if the indicated proportions are not observed;
  • It is better to store the finished mixture for a month and no more, because for some reason it will lose its qualities;
  • Correct shutdown. It is imperative to use or drain the contents of the tank, so you can extend the work of rubber and plastic seals;
  • You should not use oil intended for mopeds for your chainsaw, because it is designed for low revs.

The correct operation of your equipment fully depends on yourself. First, do not disdain the manufacturers’ signs or, in extreme cases, the instructions on the oil packaging. This will help avoid unpleasant situations. The neighbor does not always know what is the best way to do it. The cheapness of oil and gasoline is not an indicator of high quality, because a breakdown of a tool can be much more expensive (about 80% of the cost of a chainsaw) than the funds saved on the fuel mixture.

Good to know

Procurement of fuel must be carried out counting on 3 refueling. After all, storing a large volume of fuel can negatively affect the operation of the chainsaw. The mixture can behave in different ways, as it will be influenced by many factors. As a result, your household unit may receive serious damage, which will entail financial costs.

Sometimes even the capacity can affect the quality of the liquid. Plastic and glass react with gasoline, which can create a flash fire hazard.

The finished liquid cannot be stored for more than a month, because the oxidation process takes place. After working with the chainsaw, you need to use up the remaining fuel, turn off the engine and remove the remaining fuel mixture.

Fuel consumption

One of the most important questions that arises from the owners of the saw tool, because everyone wants to know what to count on.

The volume of almost all tanks is approximately 500 ml. If the power of the chainsaw is 2 kW, then the consumption of the fuel mixture will be approximately 1.2 liters per hour of operation. Simply put, such a tool will be able to work at maximum speed for half an hour without interruption. If the chainsaw is not as powerful, then it will have a smaller tank volume. So the user can independently control the fuel consumption.

Over time, the user will learn to service his tool without any help. The main task will be to keep the economic unit in good working order, using high-quality fuel mixtures. Observe safety rules when preparing flammable liquids. This will help to preserve the instrument, as well as not harm yourself and the environment.

Under the brand

For modern brands, for example, Husqvarna, Partner, Makita, Echo, Stihl, AI-92 gasoline is suitable. Today, just a colossal number of people complain about the premature failure of chainsaws due to poor gasoline. Therefore, some experts recommend pouring AI-95 into such chainsaws. At the same time, a good AI-95 can “burn the piston”, and again, a certain number of people found a compromise and mix AI-95 with AI-92. In general, it all depends on the quality of gasoline and ultimately you decide.

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For domestic instruments, Ural, Druzhba, it is recommended to take AI-80 gasoline. It is very important that fuel consumption is minimal.

Fuel mixture

To properly prepare fuel, you need a list of additional tools:

  • A plastic or metal container for diluting the substance;
  • Measuring bottle for gasoline;
  • Dispenser;
  • Syringe;
  • Chainsaw tank filling can.

Some manufacturers, such as Stihl, immediately make measuring containers for more convenient measurement of the fuel mixture.

What Gasoline Does The Stihl Chainsaw Use

Different manufacturers produce oils in different shades. HP produces a red liquid. Green oil is a premium synthetic segment. For your Husqvarna chainsaw, you need to use the correct oil. It is of high value, good quality, and is green or blue.

To mix the components, you will need the aforementioned additional accessories. Also on sale you can find special canisters with two holes for oil and gasoline. Everything is very simple here, pour in the ingredients, tighten the lid tightly and mix by tilting the container. Glass and plastic bottles can be used.

The fuel mixture must be free of water or dust.

Making the mixture: important proportions

When using a two-stroke engine, clean fuel is purchased separately and mixed with oil, often in proportions of 1:50. It is structurally impossible to install an oil pump in such an engine, therefore, pouring pure gasoline into the chainsaw is strictly prohibited! The proportions, quantity and some brands are indicated by the manufacturer in the instruction manual.

Important points in the cooking process:

  • Domestic chainsaws work with oil M8-B, M-12TPU, M8-B, TP, MGD-14M. In some cases, you can use foreign options;
  • Proportions: 2.5 liters of FI-80 gasoline per 100 grams of oil;
  • Foreign models are distinguished by minimal fuel consumption. They work on foreign oils, and their proportions become 1:40 or 1:50.

What gasoline should be poured into a chainsaw

Hello! Glad to see you again, dear readers and subscribers of Andrey Noak’s Blog. Everyone who has a chainsaw at home already knows exactly what kind of gasoline and how to fill it. But for those who just want to buy such a unit for themselves, the article will seem entertaining.

The chainsaw is one of the most convenient and versatile household appliances. Prepare the fuel mixture before use. But for the unit to work correctly, all the manufacturer’s recommendations must be followed. Each model is individual, so which gasoline to fill in the chainsaw?

To this topic

Andrei Noak was with you, see you later in the blog!

Gasoline for chainsaw

For domestic chainsaws (Ural, Druzhba, etc.), AI-80 gasoline is used. Oils can be used domestically, such as M8-V (or early marking AS-8.10), M-12 TP, M-12TPU, MGD-14M. It is also possible to use oils from foreign manufacturers. In any case, the proportions when mixing oil and gasoline should be 1/25, that is, one hundred grams per two and a half liters of gasoline.
For modern chainsaws from foreign manufacturers, the proportions are usually equal to 1/40 (100 grams per 4 liters of AI-92), 1/50 (100 grams per 5 liters of AI-92). Use AI-92 gasoline. You can often see that the AI-95 brand will be indicated in the instructions. But with our quality of this gasoline, the octane number of which is catching up with additives, I would not recommend using the 95th if you are not sure of its quality.

about mixing proportions:

To measure the required amount of oil, you can use a syringe, a measuring bottle, a special dispenser or, for example, a bottle with a dispenser from Stihl.
Oils from different manufacturers in different colors. As you can see in the picture above, HP calm oil (mineral water) is red, more expensive synthetic ones are green. Husqvarna oil can be green or blue.

REMEMBER! IN THE CASE OF A CHAINSAW OUT OF THE SYSTEM FOR THE CAUSE OF FILLING THE WRONG MIXTURE, THE REPAIR WILL BE NON-WARRANTY!

[important] Tips:
It is better to overfill than underfill! If it is written 1/50, then when you pour 25 grams per liter, terrible will not happen, since coking in this case is unlikely. But if you add 15 grams per liter, it is quite possible that this will not be enough.
Do not store the ready-made fuel mixture for more than a month (preferably less), as it loses its octane number (gasoline “runs out”).
Run out the entire tank or drain before the season to avoid loss of gasoline quality and wear of rubber and plastic seals.
Never use oils for mopeds. they are designed for lower rpm [/ important]

Under the brand

For modern brands such as Husqvarna, Partner, Makita, Echo, Stihl AI-92 gasoline is suitable. Now just a huge number of people complain about the early breakdown of chainsaws due to disgusting gasoline. Therefore, some experts advise pouring AI-95 into such chainsaws. In addition, a good AI-95 can “burn the piston”, and besides, a certain number of people have found a compromise and connect the AI-95 with the AI-92. Then it all depends on the properties of gasoline and in the end it’s up to you.

For Russian instruments, Ural, Druzhba, it is recommended to take AI-80 gasoline. It is important that the fuel consumption is as low as possible.

Fuel mixture

To properly prepare the fuel, a list of additional tools is useful:

Some Russian the automotive industry, such as Stihl, immediately make measuring containers for more comfortable measurement of the fuel consistency.

Various Russian the automotive industry produces oils of various colors. HP produces a reddish liquid. Greenish color oil is a premium synthetic sector. For your Husqvarna chainsaw, use the correct oil grade. It is distinguished by the highest price, good quality and has a greenish or blue color.

Sometimes even the capacity can affect the quality of the liquid. Plastic and glass react with gasoline, which can create a flash fire hazard.

It is important to remember that in case of a chainsaw breakdown due to poor-quality or incorrect mixture, it will not be possible to repair the unit under warranty.

The finished liquid cannot be stored for more than a month, because the oxidation process takes place. After working with the chainsaw, you need to use up the remaining fuel, turn off the engine and remove the residues fuel mixture.

Gasoline recommendations

By current standards, the best gasoline for a chainsaw should be unleaded, high octane, and reasonably fresh. High degree of purification from impurities is welcomed.

  • Filling the fuel system with fuel more than half a year old storage, adversely affects the traction characteristics of the internal combustion engine, contributes to carbon formation and the occurrence of detonation phenomena.
  • For beginners and experienced users, it is advisable to exclude low-octane gasoline for chainsaws, as well as cheap engine oils of unknown origin from the scope of their attention. The use of leaded fuel is not prohibited, but in order to extend the life of the saw, it is best to refuse its use at the selection stage.

Practice shows that saving on the quality and cost of consumables negatively affects the performance of chainsaw equipment and the duration of its full operation.

Filling the Stihl MS180 Chainsaw, petrol and butter.

Chainsaw Stihl MS180 A couple of moments of what is really, what kind of water needs to be poured into the chainsaw. Always keep an eye on.

The main thing is to correctly calculate the proportions of the mixture. Excess oil can form carbon deposits on pistons and spark plugs. Excessive gasoline can cause engine damage or piston seizure. Each manufacturer gives its own proportions to models of different power.

Making the mixture: important proportions

Using a two-stroke engine, clean fuel is purchased separately and mixed with oil, often in proportions of 1:50. In such an engine, it is structurally unrealistic to install an oil pump, therefore, pouring clean gasoline into a chainsaw is strictly prohibited! The manufacturer shows the proportions, quantity and some brands in the annotation for use.

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Measuring containers

To maintain the correct proportion of gasoline and oil, the calculation table printed on the saw body can be used. Branded containers of leading manufacturers of engine oils are equipped with built-in measuring devices that ensure accurate dosage of oil for different volumes of fuel mixture.

Volumetric utensils are included in the factory set of many models of budget chainsaws. In some cases, a 20 cm3 medical syringe will help to dilute gasoline with oil in a given proportion.

Dosage of oil in the Chinese version

Many Chinese-assembled chainsaws are simplified copies of popular European-developed models. The lack of special materials and proprietary technologies contributes to the preservation of the outdated proportion of gasoline and oil in a ratio of 25: 1.

The doubled consumption of engine oil is compensated by its lower cost. According to the developers, original components are introduced into the composition of Chinese oils, which help to increase the wear resistance of power units and the real extension of their assigned resource.

According to the conclusion of independent experts, the quality of the best brands of Chinese motor lubricants corresponds to those of European manufacturers in the middle price range. This is the level of branded motor oils of the Standard group and partially. Super.

Benefits of branded oils

Many domestic and foreign manufacturers specialize in the production of special motor oils, but the highest rating indicators are for branded products Stihl, Husqvarna and Makita.

Only in certain parameters are the domestic motor oils of the Lukoil trademark inferior to the branded assortment.

The list of advantages of branded motor oils:

  • Economical consumption;
  • Stability of performance under difficult operating conditions and during long-term storage;
  • The minimum amount of toxic compounds in exhaust gases;
  • Almost complete absence of carbon deposits.

According to the American classification, API-TB oils can be used for work in household and professional models. The Japanese counterpart is JASO-FB and JASO FD. Preparation of a combustible mixture using oil for 4-stroke engines is strictly excluded.

Red, green or any other color of oil determines the product’s belonging to the assortment of a certain manufacturer, therefore, when determining the characteristics of the material, it is not taken into account. You should be extremely careful when choosing engine oil of unknown composition and origin.

Until you receive additional information about the quality and operational parameters, it is better to temporarily refuse to use such material.

It is allowed to mix engine oils of the same type in composition and purpose, produced by brands known for the quality of their assortment. Under no circumstances is it allowed to mix mineral and synthetic oils.

The ratio of gasoline to chainsaw oil

Household and professional chainsaws are powered by two-stroke internal combustion engines running on a metered mixture of gasoline and engine oil adapted to the difficult operating conditions. The correct proportions of oil and gasoline for a chainsaw is one of the important conditions for stable traction characteristics of the engine and low-cost development of its assigned resource.

The need to obtain a sufficiently high power from a small-cube power unit makes it necessary to operate chainsaw engines at high-speed modes, therefore, increased requirements are imposed on the quality of both components of the fuel mixture.

Petrol

The main component of the fuel mixture for chainsaw engines is gasoline with an octane number of at least 92. Consumables with expired storage, made on the basis of gas condensate, having water and mechanical impurities in their volume are not suitable for fuel preparation.

  • The opinions of experts on the use of different brands of gasoline are ambiguous. On the one hand, the incomplete compliance of domestic gasoline A-92 with European standards is recognized.
  • On the other hand, the quality of A-95 gasoline is questioned due to the high content of anti-knock additives. It is possible to use this fuel for the preparation of fuel for a chainsaw only if you are fully confident in its quality.
  • The difficulty lies in the presence of various improving additives, with the help of which unscrupulous manufacturers and distributors increase the performance properties of motor gasoline with a lower octane index.

Also, irreversible changes in the working properties of the fuel occur when it is stored for a sufficiently long time in a plastic container, regardless of the level of its petrol and oil resistance.

Storage advice

It is better to prepare the mixture in an amount that should be enough for one-time work. The problem lies in the irreversible deterioration of the working properties of the mixture during storage. The ready-made composition is recommended to be used over the next few days.

A mixture of gasoline with a month-old oil impairs the traction capabilities of the engine. There is also the formation of resinous compounds in the fuel system and intense carbon formation in the combustion chamber, loss of mobility of the piston rings.

  • With minimal damage to quality, it is advisable to store gasoline with oil for no more than 2 weeks. At an ambient temperature of 25 degrees or more, this period is reduced to 8-10 days.
  • In order to save money, the expired mixture can be gradually consumed by mixing it into the fresh composition in an amount of no more than 10% of the total volume.

In order to avoid problems associated with the failure of the fuel system, it is recommended to filter the prepared mixture through a non-fiber material such as suede, or a fine-mesh twill weave, a metal mesh.

Fuel mixture working proportions

The standard gasoline to oil mixture ratio for carburetor chainsaw engines of various models is 40: 1 and 50: 1. This proportion provides full lubrication of rubbing parts of the crank mechanism and piston group, and also does not prevent the complete combustion of the gasoline-air mixture.

Taking into account external factors, the fuel mixture can be adjusted in the direction of increasing the amount of oil. Such a need arises at the stage of running in a new tool, as well as at high air temperatures. In this case, the standard oil dosage is increased by 20%.

In practice, an increase in the percentage of oil in the fuel mixture is used if its characteristics do not fully meet the stated requirements. How much oil per liter of gasoline is needed in each case is determined by the sawman himself.

Lubricants

Stricter selection criteria for the oil component. In the best variant, it is a mineral or semi-synthetic engine oil recommended by the manufacturer, intended for operation in high-speed, air-cooled two-stroke internal combustion engines.

The advantage of mineral oils is their lower cost. Their more expensive semi-synthetic and synthetic counterparts are distinguished by improved performance and compliance with environmental standards.

Synthetics:

  • Retain working properties in a wide range of operating temperatures;
  • Does not form carbon deposits;
  • Contains detergents, antioxidants, preservatives and other additives useful for the operation of the power unit.

Features of preparation and storage of the fuel mixture

Safety regulations prescribe to dilute gasoline and oil in a metal canister. This eliminates the risk of static electricity and fuel ignition.

Experts advise to pour oil into an incomplete container, mix thoroughly, and then top up with clean gasoline to the specified level. Saving working time by preparing the working mixture directly in the gas tank of the chainsaw should be excluded from everyday practice.

This technology is fraught with fuel system failures due to the ingress of a large amount of oil into the carburetor, the need for disassembly and thorough flushing.