How much oil to put in a chainsaw. Video review: Which gasoline to use 92 or 95?

How to Dilute Gasoline and Oil for a Chainsaw

A chainsaw is used when cutting trees, in repair work. The popularity of this tool grows every year. Every owner buys one for his house. However, in order to use it for a long time, it is necessary to properly care for the tool. Only with the proper care your chain saw will serve you a long life and will not be harmful to your health.

How to dilute gasoline with oil for a chainsaw

This is especially true for gasoline and oil mixtures. It should be diluted and filled strictly according to the instructions below.

Preparing the fuel mix for your chainsaw

Gasoline must be with an octane number of not less than A92. It is possible to fill in AI95, but its quality at our gas stations leaves much to be desired, so if you are not sure of the quality of the 95-th, it would be better to take AI92 gasoline for mixing it into a gasoline saw. Do not take gasoline that has stood in a can, tank or any other container for a long time. Gasoline for the gasoline mixture in a chainsaw should be fresh, otherwise it loses its properties, particularly the octane number, and even if you run a chainsaw on such fuel, it will not give full power. And the saddest thing in this case is that a chainsaw breaks down because of low-quality fuel is considered a non-warranty case and leads to expensive repair. Sometimes it is easier to buy a new chainsaw than to repair it after such a breakdown!

Read more about gasoline for chainsaws here:

The consequences of wrong dosage

Many chainsaw users do not pay proper attention to the proportion. 50 grams more or less. doesn’t it matter? And in vain: often the cause of chain saw malfunctions is the use of an incorrectly mixed fuel. And it is possible to make a mistake or deliberately shift the ratio up or down.

If there is a lot of oil.

There is an opinion among chainsaw owners that “you can’t ruin an engine with oil”. But they don’t make up the required parameters of a ready mix for a reason. Too much oil can also be harmful and uncomfortable. Because despite the improved residue-free combustibility, some of the hydrocarbons still turn into soot and carbon residue. If oil concentration is too low, not much, but if you mix twice as much oil as usual, you get coking. This is especially dangerous for cheap mineral oils, which have no “flushing” effect.

You’re also very likely to find oil in the air filter if the carburetor overflows. The spark plug will also be soiled and need to be cleaned, flushed and dried. Also, unburned oil vapors will settle in the muffler and when you work hard, they will burn off and create a plume of soot and sparks.

After such overfilling you have to clean and rinse out almost all insides of the saw. The most amusing “surprise” will be “dying” of piston rings. but this is only in case of systematic abuse of oil overflow and operation under high load.

or little

“Greedy” in the preparation of the fuel mixture has ruined more than one piston. That’s where it is really better to be overdoing it than underdoing it. If in the first case you are threatened by thorough “washing” of the engine, in the second case you will have to change the cylinder block, and it is not profitable for many saws and costs a pretty penny for others.

Conclusion: saving money is pointless. In the absence of sufficient oil, the piston begins to rub heavily on the cylinder, as at high temperature gasoline is too fluid to perform the function of lubrication.

Unfortunate outcome: scoring on the piston, ruined saw engine. In case the owner will come to his senses in time, he will find that the piston and cylinder have a beautiful blue color. No repairman can guarantee how long they will last.

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Stricter criteria for the oil component. In the best case. it is the mineral or semi-synthetic motor oil recommended by the manufacturer, designed for use in high-speed two-stroke engines with air cooling.

Mineral oils have the advantage of lower cost. Their more expensive semi-synthetic and synthetic counterparts benefit from improved performance and compliance with environmental standards.

  • retain their operational properties in a wide range of operating temperatures;
  • do not form soot deposits;
  • contain detergents, antioxidants, preservatives and other additives useful for power unit operation.

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Choice of fuel

What fuel to choose for a chainsaw. this is not an unreasonable question, the success of the machine directly depends on it. According to existing canons a good gasoline for a chainsaw is not ethylated, but high-octane gasoline from a proven manufacturer. The cleaner the fuel, the better. If the gasoline has been stored in a canister for a year and a half, it will negatively affect the nature of the work of the device, so prepare the substance before the beginning of work.

It is recommended not to use low-octane fuel, not to use cheap oil of dubious quality. It is not worth using leaded fuel, it significantly reduces the service life of the power plant.

It is important to monitor that there is no alcohol in the fuel, any additives that can impair the functioning of the power unit. Experts are still debating what is better with the 95th or the 92nd. The first has a more stable detonation performance, but 92 is still most commonly used. The reason is simple: questions often arise about the 95th, it has a large number of different additives, which have a bad influence on the performance of the saw engine. Micro detonation (piston pulse in the opposite direction) occurs, which takes place almost every time the crankshaft is turned. If the octane rating is even higher (98), the micro-thrust becomes even more intense.

The consequences of improper gasoline on the quality of the unit can only be negative:

How should the chain oiling system work??

To ensure the reliable operation of the chainsaw a special chain oil lubrication system is installed. The following information is an example

  • The fuel tanks are sized so that little oil should remain when the fuel is completely used up. In addition, it is important to properly set the carburetor so that the fuel is not produced quickly.
  • If oil is slowly reduced at the time the saw is in use, lubrication efficiency is reduced several times, duct conductivity is also reduced. Over time, a malfunction may appear, which will be quite difficult to correct.
  • It is recommended that the oil pump be checked from time to time. If necessary the performance can be adjusted with a special screw.
  • It is possible to check the correct functioning of the pump yourself. To do so, hold the tire against a lighted surface. If oil splashes appear on it, the design is working properly. Lubricant consumption is adjusted depending on the situation.

A sign that insufficient amount of lubricant gets into the cutting zone can be called strong heating and appearance of smoke, unpleasant smell at the moment of wood cutting. STIHL chain lubricants are used for chainsaw lubrication in cold weather and hot weather.The efficiency of the degree of lubrication decreases when the bar hits the ground. This is why if the saw is not used carelessly, it quickly wears out. When in contact with the ground, chain oil collects various substances on itself, which accelerates heating of the metal.

Popular chainsaw chain oil brands


Traditionally, the Germans offer several solutions:

Inexpensive for a brand name product, but very effective. No problems with it up to.15 degrees. packed in 1 and 5 liter containers. Lasts for three years, so if you buy it, you have to consider how intensively you’ll use your saw.

The name hints at the environmental friendliness of the lubricant. Plant origin makes the product completely safe for forests and ponds. Biodegradable lubricants are at the peak of popularity in Europe, though people in Russia are reluctant to pay for them yet.

Professional oil for real tough loggers from countries with harsh climates. Although forests are cut from these mostly in Russia and Finland. The formulation of the components makes it possible to work at.25, and its high price makes it pointless to use it in domestic saws.


The Swedes have not stayed away from “chain” lubricants. Two options are available in this segment:

The universal solution for both amateurs, who appreciate their efforts and tools, and professionals, for whom maximum speed and durability are vital. Biodegradation is mandatory.

economical solution for the hobby sector. Positioned as a reduced consumption oil. In practice almost the same as competitors in terms of tank emptying speed.

Other manufacturers

The oil is produced by many companies that also make chain saws. Their products are less popular than STIHL or Husqvarna, but still popular with gasoline-powered machines.

Mineral grease from the Italians Oleo-Mac.

Adhesive grease, which the manufacturer of the same name recommends for its gasoline tools.

In keeping with the global fashion for ecology, the Japanese company Makita has also decided to keep up.

If you have a saw that you don’t want to lose, don’t pour car engine waste into the oil tank. Although this fluid still has its lubricating properties, but its adhesion is almost nonexistent. Everything around it will be in the waste. In addition, the tiny metal particles that get into the oil while it is in the 4-stroke engine act on the chain, sprocket and bar like an abrasive substance.

For an expensive tool it is better to take quality consumables. For inexpensive stuff, quality stuff is still good if you don’t buy the saw for the purpose of one-time use. Chain and engine oil is a way to prolong chain saw life, but it is also a way to “kill” it fast.

Can You Use E10 Unleaded Fuel In Your STIHL Chainsaws And Small Engines?

Main chainsaw engine oil brands

The leading companies in chainsaw lubricants are STIHL and Husgvarna. The following oils are used in saws:

Don’t Do This To Your Chainsaw. E10 fuel test results after 6 months.

  • STIHL HP. mineral oil for STIHL-branded machines. It has a red color, comes in different packages, even for single use, which is very convenient.
  • HP Ultra. made on synthetic base, has improved qualities, used at low temperatures.
  • Vitals Semisynthetic. designed for budget models, used year-round.
  • Husgvarna HP. semi-synthetic, with additives to compensate for the poor quality gasoline. Also suitable for other brands.
  • Champion Jaso FD. provides reliable protection of all engine parts.

There is a wide range of products on the market for two-stroke engines from various manufacturers. How to dilute chainsaw oil, it is indicated on the package. It is better to buy products from well-known companies, it will help keep the tool in working condition longer.

How much gasoline a chainsaw uses

Another quite important indicator can be called how much fuel mixture the chainsaw consumes during operation. A container for its storage may have a volume of 0.3 to 1 liter. Consumption depends on the points listed below:

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  • The power of the engine. It can vary quite a bit. Household appliances have less power, but the tank volume is also smaller. It is therefore necessary to prepare in advance the required amount of fuel, taking into account the consumption rate specified by the manufacturer.
  • intensity of work. When sawing idle and work cycles can alternate quite frequently.
  • The load that arises. When processing wood that is frozen, for example, the load increases significantly. That’s why it requires frequent refuelling. However, there is a certain limitation on the indicator of fuel.
  • Wear and tear considerably increases fuel consumption. That is why they need to be refueled more often after a year or two of operation.

In the professional provision of services related to the sawing of construction materials, models with higher power are often used. They can run for a long period of time, which causes frequent fuel consumption. In the household models are used, which are characterized by a smaller capacity indicator. At 5-6 kW power the consumption rate can be 3 liters per hour. If less, it falls to 0.6 to 0.8 liters per hour.

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It should be noted that new models do not tolerate a bad fuel mixture. That is why when buying an expensive chainsaw from a well-known manufacturer, it is necessary to pay attention to what fuel can be used for refueling.