What oil to put in gasoline for a chainsaw
The right oil to gasoline ratio for a chainsaw
Hi there! This article will talk about the correct oil to gasoline ratio for a chainsaw. This is probably the most important thing to know when using this machine. Lack of oil will lead to excessive friction and too much oil will lead to excessive fouling and overheating. In the end both will lead to a quick breakdown of the engine. Repair can cost half the price of a new chain saw.
In addition to the right proportions we are going to talk about other important things that will maximize the life of your chain saw. what gasoline to use, what oil to pour, how to dilute it, the storage time of the mixture, etc so I advise you not to quit reading the article after the section on proportions, because further on there will be some information that will be useful for you.
Advantages of high-priced oils
Branded chain oils include useful antioxidant, anti-corrosion, stabilizing components and additives that help maintain oil performance and increase wear resistance of working equipment in difficult operating conditions.
The quality of brand-name consumables is the benchmark. Most of the products are from leading manufacturers STIHL, Husqvarna, ECHO, DAEWOO and several others. Over the past few years, the quality of Chinese chain oils produced by state-owned enterprises has improved noticeably.
Owners of chainsaws decide for themselves what oil to use to lubricate the chain of a chainsaw. At best, it is a consumable adapted to the region’s climate and recommended in the instruction manual of the particular model.
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Gasoline and oil proportions for chainsaws: peculiarities of the fuel mixture preparation
Buyers are warned by salespeople that it is forbidden to pour “pure” gasoline into chainsaws when purchasing the tool. Many buyers learn about this for the first time, wondering why it is necessary to dilute gasoline with oil.
If you neglect this rule, the consequences for the tool can be disastrous. In most cases, even an engine overhaul will not be able to help.
In this article we’ll figure out what the right proportions of gasoline and oil for gasoline in a chainsaw, and what the consequences of failing to follow this rule are.
Why is Oil Addition Necessary
At the heart of any chainsaw is a two-stroke internal combustion engine. It is one of the simplest mechanisms, consisting of a single cylinder, and has no separate lubrication system.
The technology is such that the lubricant should enter the cylinder together with the fuel mixture, settle there, and lubricate the cylinder walls, piston rings, etc.д.
The simplicity of the design of the tool has many advantages, among which the main one is the possibility of carrying out repairs of the engine and component parts on their own.
Diluting the gasoline that is poured into a chainsaw is required in order to extend the life of the tool. Dilute the fuel with oil for a chainsaw is a must, and if for some reason, you forgot to do this, then the operation of the tool is categorically contraindicated.
It is important to know! There is no special oil tank in chainsaws, which is used for lubricating the engine’s friction parts like in automobiles. This is due to the simple design of the two-stroke motor. The oil tank present in chainsaws is designed to lubricate the chain and bar during the operation of the tool.
Oil and gasoline ratios for chain saws
About how much oil to add to gasoline for a chainsaw, it is indicated, first of all, in the instruction manual of the tool. If you have forgotten what the proportion of oil and gasoline should be, you can always open the manual and update your knowledge. If you have lost the manual, then this material will help you.
To begin with, it is worth noting that there are several options for mixing oil materials with fuel. Choosing any, it is worth noting that the main criterion of each is the correctness of measuring the components.
Only the exact observance of the proportion of oil and gasoline will allow the fuel mixture to achieve the right technical qualities.
One of the most common variants of the proportion is 1:50. This means that 1 liter of petrol and 20 ml of oil are needed. This recipe for preparing the mixture is relevant for tools, the power of which exceeds 1.5 kW. This variant is one of the most popular, so if you forget the exact proportions for your tool, you can always focus on the first variant.
The second option involves observing a proportion of 1:25. To mix 1 liter of petrol with 10 ml of oil is recommended by Chinese manufacturers for their tools. For power tools with power less than 1.5 kW it is recommended to pour 25 ml of oil to 1 liter of gasoline. Each manufacturer’s chainsaws have their own limitations, and recommendations for the preparation of the fuel mixture, which are recommended to follow. Listed above are two basic options that are universal.
Important to know! Excessive amount of oil mixture in the fuel is also negative, as it will lead to a reduction in engine life due to increased shock loads on the cylinder and piston, as well as result in the formation of carbon deposits.
Not everyone knows about what kind of gasoline to put in a chainsaw either. This is also stated in the technical documentation of the chainsaw. It is recommended to use not less than AI-90, i.e. AI-92 or AI-95.
It does not matter, who is the producer of the tool, China or Europe. Professionals recommend to use AI-92 gasoline because in Russia 95 is produced from 92 by adding additives.
If you know for sure that it is really pure 95, you should use it.
Many masters continue to pour gasoline of grades lower than AI-90 into modern models of chainsaws, as it was allowed to do for outdated models of tools: “Druzhba”, “TAIGA” and others. This is not recommended!
What kind of oil to use for chainsaw chain lubrication depends directly on the tool model. STIHL brand name chain saws and other brands use special lubricants that are designed for use with STIHL chain saws only. The recommended oils can also be found in the technical documentation.
When selecting the lubricant it is important to make sure that it is intended for two-stroke motors. Oils for mixing with gasoline and chain oil have different compositions, qualities and uses. You can not mix them, as this will accelerate the failure of the tool.
Recommended oil brands for two-stroke engines:
Very many oil brands and models, so please choose one directly from your chainsaw model and availability in the stores.
Algorithm of refuelling your chainsaw
The mixture of gasoline and oil is best prepared in a 2.5 liter plastic bottle if you have to refill the tool frequently. If you only have a few fillings to make, a smaller container is better. You should always have measuring jugs to make sure you have the correct proportions of both types of fuel. Most oil manufacturers offer these measuring pots.
First pour fuel into the tank and then add oil. It is important to take into account that there must be enough space in the tank for thorough mixing of the fuel mixture.
It is important to know! Never mix fuel directly in the tank.
After preparation, it is recommended to store this mixture not longer than 2 weeks. Shake the mixture thoroughly every time you refuel. If you are not sure that all the fuel will be used, it is better not to prepare it in large quantities.
STIHL motor oil comparison
There is very little difference between brand name oils in their composition and their specifications, so to give you a quick overview we can compare three different engine oils from the popular STIHL brand.
- STIHL HP engine oil is the cost and performance choice. It is formulated for the high-performance, semi-professional and professional chainsaws. The composition does not produce soot or toxic compounds when burned, does not attack gaskets and is very resistant to high and extreme loads.
- STIHL HP Super is a classic low-ash semi-synthetic that meets the needs of the most demanding users.
- STIHL HP Ultra is a pure synthetic engine oil with excellent resistance to extreme temperatures and media. Excellent material for powerful engines in professional chainsaws.
Choice of engine oil
The oil intended for 2-stroke engines must meet the following requirements.
- The grease should create ash in the combustion process as little as possible. Ideally, it should be completely combustible.
- The lubricant should have good solubility in petrol and high level of purity from different impurities that can cause clogging of very narrow channels of the carburetor.
- The oil should have good anti-corrosion, anti-wear and lubricating properties.
There are certain standards of oils designed for 2-stroke engines: TC-W3 and 2T. Lubricants meeting TC-W3 standards are used for water-cooled engines (boat engines, jet-skis). 2T oil is used as a gasoline additive for air-cooled two-stroke engines (lawnmowers, mopeds, chain saws, etc.).д.).
Oils can be green, red or blue. This is to make their presence in the gasoline easy to identify.
If low-quality lubricant is used, the entire engine piston group may fail due to formation of soot under the piston rings. As a result, they will not be able to compress and scoring will occur on the cylinder walls. Also inadequate lubrication of the crank bearings can lead to overheating and eventually to seizure. The low oil pressure warning light comes on briefly when the engine is running and can cause injury or death.
Advantages of branded Super and Ultra motor oils
It is not necessary to add any additives or additives to the original equipment lubricants. Note that fuel mixtures prepared with mineral oils and their synthetic counterparts must not be mixed.
Fuel mixture preparation rules
If you want, you can create the mixture on your own hands. It is recommended to do this before direct use of the chainsaw. If the ready-to-use lubricant is stored for more than 10 days, additives build up a chemical bond which reduces the life of the engine. Experts recommend that before putting the chainsaw into long-term storage you drain the fuel and run out the rest at idle speed.
Proportions should be chosen according to the recommendations of the manufacturer of the appliance. Depending on the model and its specifications, the ratio may vary from 1:20 to 1:100 or more.
When mixing the active elements it is strictly forbidden to use waste oil or oil that is not designed for a two-stroke motor.
How the mixture is mixed
It is also necessary to pay quite a lot of attention to the direct process of mixing the used components. as a rule the fuel mix is prepared in volume that will be enough for 3-4 refuellings of the used device. Carry out the mixing procedure only with the use of a measuring cup.
Among the peculiarities of the issue in question, the following points should be noted:
- Some chainsaw manufacturers include a measuring jug with markings for fuel and oil in the package.
- If you do not have a special container you can use a canister or a dry bottle. It is convenient to dose using a standard syringe without a needle.
After all ingredients have been added to a container, you can start mixing the components directly. For this, the container is closed with a lid, then shaken to obtain a homogeneous substance.
Working proportions of fuel mixture
As previously noted, the proportions of the ratio of oil and gasoline for a chainsaw can vary significantly, largely depending on the features of the design itself. An example of mixing can be called the proportions 40:1 and 50:1. Such a ratio ensures high-quality lubrication of the internal elements of the installed engine.
In some cases, the concentration of the lubricant can be adjusted upwards, due to which more effective lubrication is provided. An example of this would be when a new tool is being machined. You can also improve the cooling efficiency by adding a large quantity of oil to the mixture. Experts recommend increasing the oil concentration by no more than 20% of the usual value.
Experience shows that in most cases the saw operator has to adjust the oil concentration in the fuel according to the job in hand. This is because serious breakdowns may occur as the design wears out. Sawing can be carried out over a longer period of time with the normal performance.
Various containers with markings can be used as measuring containers. Checking the ratio is made simple with the brand-name container included in the scope of supply.
It is worth considering that the measuring utensil is included in the factory set even for budget models. However, an ordinary syringe of a larger capacity is not bad either.
Recommendations for storage
It is not recommended to save time and mix the composition directly in the tank of the chainsaw. This is due to the fact that it will be quite difficult to achieve the desired result. Recommendations for storage are as follows:
- The resulting mixture can be stored for a maximum of 2 weeks. If the ambient temperature increases, the storage time is reduced to 10 days.
- In some cases a previously prepared and expired mixture is added to a new one in order to save money. However, its concentration should not be more than 10%.
In order to prolong the work of the fuel system it is recommended to filter the composition through the material, represented by fibers.
What kind of gasoline to put in a chainsaw. manufacturer’s tips
The brand of gasoline used for chainsaws directly depends on the design features of garden tools. In addition the country of manufacture and year of manufacture of a chainsaw is often taken into account.
Gasoline for a home-made chainsaw, such as Ural or Druzhba, should be AI-80. It has to do with the fact, that our chainsaws are less demanding in respect of fuel quality.
Most of the modern imported gasoline saws, as a rule, need to be filled with not less than АI-92 gasoline. If you use fuel with a lower octane number, it will cause damage to the engine and carburetor chainsaw.
For 2-stroke chainsaw engines should not use fuel that is not fresh. If gasoline has previously been sitting in a can for several weeks, it is best to discard it. over, in the case of a breakdown, none of the warranty service centers will not agree to repair the saw under warranty.
Running-in peculiarities of the new tool
This includes a gentle mode of operation of the chainsaw at the initial stage of its operation. The technology also calls for running the engine on a mix with 20-percent more motor oil.
The Running-in time in engine hours is given in the manual. In practice, for the tool to reach a working level, it is enough to work 3-5 filling of the gas tank of the saw.
New models do not need a running-in period, but it is not advisable to run the chainsaw under heavy loads for the first few hours.