# How Much Oil To Pour Into The Chainsaw

## How to prepare the mixture?

In order for the equipment to serve for a long time and properly cope with its functions, you need to know exactly how much oil you need to add to gasoline for the Stihl chainsaw. Previously, we found out that it is better to use a lubricant product from the manufacturer Stihl and unleaded AI92 or AI95 gasoline as components. Leaded fuel grades negatively affect the operation of the unit and disable it. With such components, 20 ml of oil is added to the mixture per liter of gasoline. Any violation of the proportions leads to the appearance of carbon deposits on the spark plugs and pistons, as well as the formation of scoring. The oils used can be green, blue or red.

Their presence is easily determined by the color of the mixture. To dilute fuel, often complete with equipment, a special canister is attached. These containers are marked with graduations and have two holes. The user only needs to fill the tank with the components of the mixture in the required marks, close the lids and mix. Some people use plastic bottles and syringes to measure oil for THESE purposes. In this case, it is necessary to make sure that no foreign particles or water get into the container, all this will worsen the operation of the engine.

## Correct proportions

Most often, when preparing fuel for saw operation, proportions of 1:50 and 1:40 are used. This means that for 50 or 40 parts of gasoline, one part of oil is added. Calculations are made as follows: 1 l = 1000 ml, 1000/50 = 20 ml or 1000/40 = 25 ml, that is, in the first case, pour 20 ml into each liter of gasoline, and in the second. 25 ml of oil. If there are no instructions and you do not know the proportions for preparing the mixture, then use the following recommendations:

• Tool and oil from the same brand. For example, for a Stihl chainsaw, the ratio of gasoline to Stihl oil will be the same as indicated on the container with oil, usually 1:50.
• In the substances used for the mixture, different brands. a proportion of 1:40 is chosen.
• There is only one brand, but there is no information on the ratios of substances in the oil. they dilute 1:40.
• In the absence of any data in dust and oil, dilute the mixture in a ratio of 1:40. The only thing to be sure is that the oil is designed for two-stroke engines.

To run a new saw in the first three fuel tank fillings, add 20% more oil. In this case, instead of a ratio of 1:50, it will be 1:42, and the ratio of 1:40 turns into 1:33. A liter of gasoline will require 24 or 33 ml of oil, respectively. The second running-in measures are not carried out with the new saw. Manufacturers advise to work only at the highest speed at all times. After running in the tool, the usual proportions of 1:50 or 1:40 are used. In some cases, the manufacturer of the equipment indicates other ratios, for example, 1:25 or 1:32, they must be observed.

## Features of running in a new tool

This concept includes the gentle operation of the chainsaw at the initial stage of its operation. The technology also provides for the operation of the engine on a mixture with an engine oil increased by 20%.

The running-in time in engine hours is indicated in the attached instructions. In practice, for the tool to reach the working level, it is enough to generate 3-5 refills of the saw’s gas tank.

New models do NOT need running-in, but the first hours of operation are not recommended for the chainsaw to be used with heavy loads.

One of the fundamental characteristics of the durability of chainsaws and their high-quality operation is the correct observance of the ratios of the constituent liquids when preparing the fuel mixture. It is known that an insufficient amount of oil leads to excessive friction of parts and their rapid wear, and excess oil leads to the appearance of carbon deposits and engine overheating. This article will discuss the proportions of oil and gasoline for the Stihl chainsaw. This is especially important for beginners who have just purchased a tool.

## 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. It should be excluded from everyday practice saving working time by preparing the working mixture directly into the gas tank of the chainsaw.

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.

### Fuel mixture preparation container

You can use simpler containers, which are always at hand, for example, plastic bottles or glass, but static electricity appears in such objects. Necessarily make sure that dust or moisture, solid particles miss the container, if all proportions are observed, then you need to mix everything well.

When the mixture is finally ready, it can be poured into the tank without carefully developing the fuel and so that it is not completely filled. Depending on the use of the chainsaw, you need to either completely use all the lubricant or drain it into a container and then refill it as needed, but no later than 30 days.

It is good to use various additives recommended by equipment manufacturers so that the fuel is of higher quality. There are a lot of additives on sale and you can choose the right one for your chainsaw.

## Chainsaw “Stihl”: which gasoline oil to use?

A number of manufacturers producing equipment also develop their own consumables, which are adapted to the operation of a particular engine. So the Stihl company produces oil exclusively for its equipment. It is supplied with special additives, which are able to compensate for the quality of the fuel, improving lubrication and cleaning of the fuel mixture. It should be noted that Husqvarna HP oil is universal and can be used for all chainsaws. It can be used at a temperature not lower than 10 degrees.

And also for two-stroke engines products of the following brands are used: Sadko, Kraissmann, Oleo-mac Prosint. If you use a Stihl chainsaw, how much oil per liter of gasoline should you fill? The ratio will be 25 ml of additive per liter of fuel. It must be remembered that there are oils for chains and motors. They are intended for different purposes and are NOT interchangeable. The use of chain oil for the preparation of a fuel and lubricant mixture leads to tool breakage.

## Shelf life of the finished fuel mixture

Motorists know that it is not worth storing gasoline for a long time, and the finished fuel mixture deteriorates even faster. Mix the required proportions of oil and gasoline for the Stihl chainsaw before starting work. Manufacturers allow storage of finished fuel for up to one month, and experts recommend that this period be reduced to 10 days. Immediately after mixing, the solution begins to lose its initial properties and over time it becomes completely NOT of the same quality as it was prepared. Learn to prepare enough saw fuel to be consumed in one go. It comes with experience. The mixture should be stored in a gasoline-resistant, opaque, tightly closed container. For this, any canisters made of plastic metal for combustible materials are suitable. And also use a container of oil or glass containers made of dark glass.

## Which brand to use motor oil?

For each model, the manufacturer advises a list of materials to be used. It is better for the user to adhere to THESE recommendations, because the warranty does not cover tool breakage due to inappropriate fuel and lubricant. In this case, the owner pays for the repair of the chainsaw himself, which can be up to 80% of its cost. When you can’t follow the manufacturer’s recommendations, try to follow these rules:

• Use oil only for 2-stroke engines.
• DO NOT use after the expiration date.
• DO NOT add used oil with a large amount of impurities to gasoline, since the mechanisms of the tool may be damaged.
• Chain lubricant cannot be used for fuel mixture.
• It is preferable to use synthetic and semi-synthetic oils, which are more expensive than mineral oils, but do not form harmful deposits.

The mixture is better prepared 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 finished composition is recommended to be used for a few next 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 NOT 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 NOT 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 for non-fiber material such as suede, or fine-mesh twill weaving, metal mesh.

## 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. These engines do not have an engine oil filling chamber, and if the fuel is filled without lubricant, the crankshaft, piston, bearings and connecting rods will NOT receive lubrication. This will significantly reduce the service life of all the listed parts, therefore, it is prohibited to fill in clean fuel.

Gasoline and oil for the chainsaw must be filled 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. For the tool to work properly, it is necessary to fill it from the first day of operation of the tool Not only with high-quality materials, but also observe the correct proportions.

For the engine to work properly, the main thing is to fill it with clean fuel without contamination.

## How to dilute gasoline with chainsaw oil

The surest solution is to follow the recommendations specified in the instructions for the product! In the absence of such an opportunity, you can use a special fuel preparation formula.

• High-quality fuels and lubricants;
• Correct proportions;
• Mixing tools and technology.

## What should be the proportions of oil and gasoline to prepare the fuel mixture of a chainsaw

The chainsaw is started using an engine running on a mixture of gasoline and an adaptation to the ambient conditions of the oil. It is necessary to observe the proportions of oil and gasoline for the chainsaw, then the device will work stably. To achieve high power, dust is used at high engine speeds. Therefore, increased requirements are imposed on the quality of lubricants and fuel.

## What happens if you do not take into account the manufacturer’s recommendations?

In case of violation of the rules for the preparation of fuel and lubricant mixtures and non-observance of the proportions when adding oil to gasoline in Stihl 180 chainsaws; the following problems arise:

• With an increase in friction, the wear of the working surfaces of parts will increase.
• Insufficient lubricant will cause bearings to fail.
• The full functioning of mechanical assemblies is disrupted due to premature wear of parts, their service life is significantly reduced.
• When using low-grade grades of gasoline and oils, the performance of the unit decreases with the subsequent breakdown of fundamental units and parts.

The fuel is prepared before refueling the saw, do not allow excessive contact with oxygen. After finishing work, the remaining mixture must be drained.

## How to dilute gasoline for a chainsaw

Consider how the mixture is prepared for a chainsaw. It is necessary to calculate the correct ratio of gasoline and oil for the chainsaw. For the chainsaw, they take fuel with a high octane index: AI-92 or AI-95.

To prepare the fuel mixture, it is necessary to add 30 g of oil to 1 liter of gasoline, which corresponds to the design of the saw. The resulting fuel fluid is poured into the fuel compartment. Before diluting gasoline, you should get advice from service specialists, who specializes in the repair of chainsaws.

In order for the saw to have a long service life, it is necessary to properly prepare a gasoline-oil mixture, for which only AI-92 and AI-95 brands can be used. The fuel must be NOT leaded, otherwise the internal combustion engine may break. Do not use an old product that has expired, because over time, the fuel can change the octane number. The proportion of lubricant and fuel is strictly adhered to.

You should not save when choosing oil for Husqvarna chainsaws and others. The proportions must be observed due to the fact that excess oil can lead to the growth of carbon deposits on the chainsaw units. Excess gasoline can provoke piston damage and engine breakdown. So, 1 liter of fuel is mixed with 20-50 ml of oil. Husqvarna recommends adding 100 ml of grease to 4 liters of gasoline. This proportion is suitable for saws with a power of up to 1.5 kW.

For structures with a power of more than 1.5 kW, an oil ratio of 1:50 is used. That is, dilute the gasoline like this: add 5 liters of gasoline for a chainsaw to 100 ml of oil. Partner recommends when refueling a chainsaw with fuel, dilute the fuel fluid at the following rates: add 100 ml of lubricant to 3.3 liters of fuel.

When using super-synthetic oils, the indicators are 1: 100. That is, the fuel mixture for the chainsaw must be prepared according to the recipe: add 100 ml of lubricating fluid to 1 liter of fuel. When choosing components, you must use the information that is given in the instructions for any modification of the saw.

Often plastic bottles and other containers are used to mix ingredients. Be careful with plastic and glass. Mixing the components may generate static electricity. It is necessary to ensure that no pebbles, sand or drops of water get into the fuel mixture. The fuel mixture must be mixed well. The prepared fuel mixture should not be stored for more than a month, as oxidation of materials may occur, and the composition of the mixture will change.

Engine breakdown, which was caused by expired fuel, is recognized in the services NOT under warranty. At the same time, the cost of repairs can reach 80% of the price of a new design.

After all work with the use of the chainsaw has been completed, you need to spend the remaining fuel, turn off the engine, remove the remaining mixture.

For the best operation of the device, it is necessary to make a mixture that will ensure uninterrupted operation of the engine, complete combustion of the gasoline-oil mixture without the formation of carbon deposits, smoke or damage.

## Fuel quality

If you want the tool to do its job perfectly and serve for more than one year, you must provide it with fuel and lubricant of the proper quality.

According to experts, it is necessary to use unleaded fuel with an octane number exceeding 90. Gasoline A92 and AI92 is considered ideal. You can use the 95th, but there is an opinion that it is better to refrain from this kind of gasoline, since some of them are made on the basis of the 92nd with the addition of additives. The latter, in turn, are harmless for 4-stroke car engines, but they will be superfluous for the “sensitive” mechanisms of 2-stroke motors.

It is recommended to use fresh gasoline for chainsaws, since when stored in a canister, fuel can lose octane characteristics.

According to the international classification, oils of the following markings are used for chainsaws:

• Use oil for 2-stroke engines only;
• DO NOT use material beyond the expiration date;
• It is strictly forbidden to add mining (it contains many unnecessary impurities. harmful to the central mechanism of the chainsaw)
• You can not use chain lubricant (for each device: chain and engine. it is its own);
• It is preferable to use synthetics or semi-synthetics (during development, it almost does not form combustion products, but the price of such material is higher than that of mineral oils).

There are several options for the ratio of fuel and lubricant. As a rule, this number ranges from 20 to 50 ml of oil per 1 liter of gasoline.

Again, it is necessary to follow the instructions for the product or the recommendations indicated on the oil label (priority of the instruction). In the absence of such, before dissolving gasoline, it is required Pay attention to the power indicator of the product, since the created proportion directly depends on it.

For chainsaws with power:

• Up to 1.5 kW, the recommended ratio is 25 ml of oil per 1 liter of gasoline;
• Above 1.5 kW 20 ml / l.

In gasoline for a chainsaw, it is allowed to add oil a little more than the recommended proportions (up to 5 ml per 1 liter). In this case, you should be extremely careful, because non-observance of the proportions can lead to breakdown, and as a result, costly repairs.

If gasoline is diluted with a large volume of oil, then during operation the number of shock loads on the cylinder-piston system will be increased, and carbon deposits may also form, as a result of which the CHP will fail.

Adding a small amount of oil to gasoline for a chainsaw can lead to insufficient lubrication of the surfaces of moving parts, which will lead to additional friction of the elements and their heating, with the subsequent destruction of the entire mechanism.

## What gasoline to pour into a chainsaw?

According to experts, you should use unleaded gasoline obtained by adding lead-free additives, the octane number of which exceeds 90. For foreign models, you need to fill in gasoline of higher grades and use branded oils from tool manufacturers. The AI-92 grade fuel is considered perfect. How to dilute gasoline for the Stihl 180 chainsaw? In this case, oils are meant in a mixture of 1:40. AI-95 fuel is also quite suitable for it, but according to the opinion of professionals, it is better to use it for a chainsaw.

The fact is that it is manufactured on the basis of AI-92 with the introduction of certain additives, which change the quality of the fuel. These components are deposited on the inner parts of the tool and, upon reaching a critical mass, begin to flake off, disrupting the operation of the mechanism. The best option is to follow the instructions that come with the selected model. It is recommended to use fresh gasoline, because during long-term storage in containers octane characteristics are lost.

Consumer reviews of Stihl saws are mostly positive. It is lightweight and affordable. There are some complaints about the low power of the instrument. But for occasional use at home, it is quite suitable. And if you use the correct proportions of oil and gasoline for your Stihl chainsaw, it will last for many years.

## Instructions for refueling a chainsaw

Knowing the ratio of the preparation of the petrol-oil mixture, you can start refueling it. The refueling instruction is as follows:

• First you need to prepare the mixture. Having combined the two main components, you should mix them thoroughly
• Tool Place on a clean and level surface. Before unscrewing the gas cap, it is necessary to clean or blow off sawdust, dust and dirt
• Tank neck must point up
• Install a small watering can in the neck, then pour fuel
• I control the filling process, since the volume of the tank is small, so it fills up quickly
• Do not fill up to the full maximum, since when the tank cap is closed, the remaining fuel will splash out
• After the fuel is poured into the tank, immediately add chain lubricant
• Fuel consumption and chain lubrication are approximately the same, therefore both tanks must be filled at the same time
• After refueling, you can start starting the engine

It is better to start the motor not in the place where the refueling was carried out, but to move to a distance of 2-3 m. The tool is ready for work, and you can start to start it. You can read how the chainsaw engine starts in this material (link).

Read more:  How To Sharpen A Chainsaw Chain With A File

## 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 SEPARATE cases, dilute gasoline with oil in a given proportion will help a medical syringe with a volume of 20 cm3.

## Petrol

The main component of the fuel mixture for chainsaw engines is gasoline with an octane number of at least 92.

• 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.

There are also irreversible changes in the operating parameters of the fuel when it is stored for a sufficiently long time in a plastic container, regardless of the level of its petrol and oil resistance.

## 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 two-stroke air-cooled internal combustion engines.

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

Synthetics:

• Maintain performance over a wide range of operating temperatures;
• Do NOT form carbon deposits;
• Contain detergents, antioxidants, preservatives and other additives useful for the operation of the power unit.

## Dosage of oil in the Chinese version

Many chainsaws of the Chinese assembly are simplified copies of popular models of European design. The absence 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 assurances of 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.

## Self-selection criteria

A wide range allows you to choose oil that fully corresponds to the class and characteristics of the chainsaw, the conditions of its subsequent operation.

• For budget models you can use oils of the Standard category, for professional chainsaws. Consumables of the Super and Ultra categories are recommended.
• To prepare a full-fledged fuel mixture for a chainsaw, it is advisable to use branded oils or their branded counterparts recommended by the instruction manual. In particular, Stihl and Husqvarna engine oils are completely interchangeable in composition and application.

Experts recommend that owners of chainsaws exclude from the scope of attention motor oils intended for two-stroke engines of mopeds, boat motors and other mechanized household appliances.

The power units of this equipment operate in more comfortable conditions, which makes the requirements for their operational characteristics less stringent.

## 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. It should be excluded from everyday practice saving working time by preparing the working mixture directly into the gas tank of the chainsaw.

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.

The mixture is better prepared 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 finished composition is recommended to be used for a few next 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 NOT 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 NOT 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 for non-fiber material such as suede, or fine-mesh twill weaving, metal mesh.

## Fuel mixture working proportions

The standard ratio of gasoline to oil in the fuel mixture for gasoline-powered carburetor engines of different models is 40: 1 and 50: 1. This proportion provides full lubrication of the 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 towards an increase in 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 sawfly himself.

## The ratio of gasoline to chainsaw oil

Household and professional chainsaws are powered by two-stroke internal combustion engines operating 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 fundamental 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.