How To Mix Gasoline With Chainsaw Oil
Gasoline with oil for chainsaws. How to dilute and why it is done How to properly dilute gasoline with oil for refueling two-stroke engines of chainsaws. The recipe for the preparation of a fuel mixture for two-stroke engines of gasoline units
Why gasoline is mixed with oil for refueling chainsaws
It is necessary to dilute gasoline with oil in order to avoid the failure of the internal combustion engine. The reason for this is the design features of the lubrication system for two-stroke motors. In the design of such engines there is no chamber for filling engine oil, and if you fill in fuel without lubricant, then the crankshaft, piston, bearings and connecting rods will not receive lubrication. This will significantly reduce the service life of all of the listed parts, therefore, do not fill with clean fuel.
Gasoline and oil for the chainsaw must be poured in the appropriate proportions, which makes it possible to effectively lubricate the rubbing parts. Lack of lubricant or its excess will lead to negative consequences in the form of carbon deposits. In order for the tool to work properly, it is necessary from the first day of operation of the tool to fill it not only with high-quality materials, but also to observe the correct proportions.
For the engine to work properly, the main thing is to fill it with clean fuel without contamination.
Gasoline with chainsaw oil. How to dilute and why it is done
Chainsaws from different companies are based on a two-stroke internal combustion engine that drives the cutting headset of the tool. To drive the internal combustion engine, the proportions of gasoline and oil for chainsaws are used. Combining gasoline with oil is a mandatory procedure, so if you just bought a tool, then you need to understand the peculiarities of refueling it.
Gasoline to chainsaw oil ratio
The proportions of oil and gasoline for refueling two-stroke engines of chainsaws of different brands is 40 to 1 or 50 to 1. This ratio is standard, which is used not only by beginners, but also by experienced sawers. It is this ratio for preparing the fuel mixture that is close to ideal, and provides lubrication of the rubbing parts of the crank mechanism and the piston.
How much oil should be poured into gasoline in milliliters? Calculated per ml, the proportion of oil and gasoline 1 to 50 is 20 ml per 1 liter. To prepare the correct mixture, fill 1 liter of gasoline in a plastic bottle and dilute it with 20 ml of oil. To correctly measure how much oil to pour, you should take a special measuring container and fill it up to the appropriate mark. If you plan to immediately prepare 2 liters of fuel, then 40 ml of lubricant must be added to this amount of gasoline.
There are other ratios that different manufacturers offer. These values of the ratios differ insignificantly, but if you have subtracted other values in the instrument’s passport, then you need to adhere to them. A value of 1 in 50 or 40 is standardized. Pour 15 ml of oil into 1 liter of fuel in the summer, and in winter, add at least 20-25 ml. Knowing the recipe for preparing the mixture, you should also figure out the question of which gasoline to pour into the chainsaw?
How lubricant quality affects engine life
Now let’s talk about how exactly the quality of the oil affects the operation of the engine and its resource, since many do not understand this.
The principle of operation of a two-stroke engine implies that the lubrication of its internal parts is due to the oil in the gasoline. It lubricates the crankshaft and connecting rod bearings. Also, oil envelops the cylinder walls and reduces the friction of the piston rings.
The engine of the chainsaw is highly revving, some models can develop up to 15,000 rpm, which puts an enormous load on the bearings and other engine parts. Insufficient or poor quality lubricant will cause the bearings and piston to run virtually dry, resulting in increased temperatures. Elevated bearing temperatures can cause them to seize.
Heating the piston to the limit causes it to melt, particles of aluminum from the piston are transferred to the surface of the cylinder and, cooling slightly, become solid. The rings, passing the area with aluminum build-ups, are damaged or jammed.
Another danger of poor-quality lubrication is carbon deposits. Carbon deposits can form under the piston rings, making it difficult or completely stopping their correct operation, and in the exhaust port. It is not uncommon for carbon deposits to completely seal the exhaust window and muffler. Below is the consequences of using low-quality oil.
Main brands of chainsaw motor oils
Stihl and Husqvarna are leaders in the production of quality lubricants for chainsaws and lawn mowers. Their range includes both conventional mineral lubricants for two-stroke engines and synthetic heavy-duty oils. Let’s consider the assortment in more detail.
Stihl HP
Stihl HP mineral grease has been specially developed by STIHL engineers for use in their tools. That is why owners of chainsaws and Stihl lawn mowers are recommended to use this type of oil.
Its color is red, the shelf life in a closed container is no more than four years. It is packed in several types of containers, so you can choose the most convenient packaging for yourself. Not so long ago, a convenient container of 20 grams appeared, which is diluted by one liter of gasoline. For those who rarely use a chainsaw, this is the best option. Can be thinned and used immediately.
Stihl HP fully complies with high European standards.
What are the proportions to dilute the components for the mixture
The high-quality operation of the chainsaw will depend on the correct filling of the chainsaw with a mixture of lubricants and fuel. To determine the proportion of the components and how to dilute the fuel, it is recommended to read the instructions. If you have forgotten how to dilute, or have lost the instructions, you can go to the Internet for help. It should be said that the proportion between oil and gasoline for a chainsaw must be observed exactly.
That is, one liter of gasoline is diluted with twenty milligrams of lubricant. This ratio is quite suitable for tools, the power of which is more than one and a half kilowatts per hour.
For those chainsaws whose power is less than one and a half kilowatts per hour, it is recommended to mix gasoline with oil in a ratio of 1:25. That is, one liter of gasoline is diluted with twenty-five milligrams of engine oil.
It must be remembered that the presence of a large amount of oil in gasoline will lead to rapid wear of parts. When the level is exceeded, the load on the cylinder and piston increases. Carbon deposits form faster.
In addition to the instructions, you need to know what kind of oil you need to add for the chainsaw. Since there are many varieties, it is difficult for the average owner of a chainsaw to choose the best one offered. Let’s consider some of them.
Gasoline and oil proportions
For example, Stihl, together with quality saws, produces special lubricants that are used in these tools. Special oils are produced by companies such as:
- Stihl
- Kreissman
- Sadko
The above three companies are simultaneously manufacturers of chainsaws and special lubricants for them. The next step in proper tool maintenance is the saw threading algorithm.
Why do you need to dilute the lubricant
At the very beginning, it is necessary to understand the reason for the dilution of the fuel. The mixture used for the chainsaw is diluted primarily to prolong the life of its owner. The instructions for it strictly prohibit operation without diluting gasoline.
The basis of the chainsaw motor is a piston internal combustion engine. It consists only of a cylinder, therefore it does not have additional systems for lubricating parts. The mixture enters it, settles, lubricates the piston rings and walls. In tools like chainsaws, oil with gasoline acts as a one-of-a-kind lubricating fluid. The mixture extends the life of the functioning of all parts.
In addition, it contains additives that are beneficial for engine operation. It has antioxidant, preservative and other properties that are also useful for the engine and its parts.
How to refuel the saw
A plastic bottle is best for refueling your chainsaw. The volume of the container should be equal to two liters if you will use the tool frequently. A smaller container should be used when you rarely use the saw.
Dilute fuel and lubricant in a separate bottle. The exact proportions specified in the instructions must be observed. It is recommended to leave an empty space in order to mix the liquid well.
Such a mixture should be stored no more than two weeks. Be sure to shake the bottle before use. Experts do not recommend diluting a large amount of the mixture at once and storing it for years. The storage temperature should not exceed twenty-five degrees Celsius. If more, then the shelf life is reduced.
Filling the chainsaw with oil
Long-term storage of the mixture greatly impairs the traction capabilities of the engine. Carbon deposits form, the ability of the pistons to move quickly is reduced.
What oil to add to gasoline for a chainsaw
Many chainsaw manufacturers also create their own consumables, including oils adapted to work with a specific engine. They differ in their composition, quality and purpose. Distinguish between chain and engine oils. They are not interchangeable, so adding chain oil to the fuel tank could damage the tool.
Among a number of brands, it is worth highlighting a few designed for 2-stroke engines:
- Oleo-mac Prosint;
- Stihl and Stihl HP;
- 2-takt motorsugen;
- Kraissman;
- Sadko;
- Husqvarna 10.0.
Stihl chainsaw oil
For 4-stroke, other specialized oils are used, for example, MOL Dynamic 4T or Oleo-mac 4T SAE, etc.
It is important not to use used engine oil under any pretext. It contains particles of rubbed metal, excess oxides and other components that will cause irreparable damage to the fuel system.
How to dilute chainsaw gasoline
Few people know the rules how to dilute gasoline for a chainsaw. An incorrect proportion of gasoline and oil, poured into the tank of a two-stroke engine of a chainsaw and used for a long time will lead to negative consequences that will affect the operation of garden and sawmill tools. Ignoring the use of an oil-fuel mixture and using pure gasoline instead will lead to premature breakdown and urgent repair of the saw.
What gasoline to pour into chainsaws
A lot of controversy goes around which gasoline to fill in the fuel tank. For foreign models, manufacturers recommend using 92nd gasoline. On the other hand, local tool manufacturers recommend using a lower grade fuel, for example, AI-80. But everyone agrees that it is not recommended to use gasoline with an octane rating of 95 or higher. This is due to the presence of special additives (additives) in it, which change the qualitative composition of the fuel, but unlike car engines, the tool has a more sensitive filling. Excess components are deposited on the internal parts and, with the accumulation of critical mass, exfoliate and disrupt the operation of the mechanism.
Gasoline for chainsaw
In some cases, a mixture of 92nd and 80th unleaded fuel is used for refueling.
The best recipe is to follow the instructions that came with the tool. It usually indicates the “correct” option for this model, and the default is 92 grade gasoline.
Gasoline selection
The first question that the user faces before starting work is what gasoline to pour into the Stihl chainsaw.
Gasoline for the Stihl chainsaw is filled exclusively with unleaded high-octane gasoline, that is, with an octane number higher than 90. If you fill it with low-octane gasoline, it is fraught with engine overheating, piston seizure and engine failure. Therefore, it is optimal to pour AI-92 or AI-95 gasoline into the chainsaw, but here the question of fuel quality arises.
Poor-quality AI-92 may “fall short” of the declared octane number, and AI-95 often contains many additives that do not bring any benefit to the engine. In addition, if the additives are of poor quality, they do not last long, and after a few days, the purchased fuel can turn into a low-octane fuel, which is not suitable for a chainsaw engine.
At the same time, a good 95 can harm the piston system. “burn” it. Thus, some users have found a way out: to fill the chainsaw with AI-92 gasoline mixed with AI-95. This achieves an optimal balance between the octane number and the amount of additives.
What gasoline and oil is best for refueling a Stihl chainsaw: a table of ratios, how to breed, proportions
The durability and reliability of a chainsaw is determined not only by the conditions of its operation, but also by the quality of the fuel used for refueling. In addition to the special conditions of use when lapping parts in the first few refuelings, attention must also be paid to the quality of the fuel mixture.
Professional Stihl chainsaws are equipped with two-stroke engines that require high-quality fuel. A metered mixture of high-octane gasoline and oil, designed to operate the engine at high speeds. The correct choice of gasoline and oil for the Stihl chainsaw is the key to a long and successful operation of this unit.
Ratios of gasoline and oil for the Stihl trimmer
The German manufacturer of high-quality cutting tools Stihl also produces motorized mowers in addition to chainsaws. It is an indispensable tool for mowing grass and lawn trimming, lightweight and mobile.
A lawn mower, or trimmer, also has a two-stroke engine and is fueled with a fuel mixture. For the Stihl trimmer, a ratio of 1:50 is recommended (for 5 liters of gasoline, 100 ml of oil).