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My Stihl uses 50:1 of petrol and two stroke oil. Useful?

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The fuel to oil ratio varies depending on the engine, but it`s typically around 50:1. This means that for every 50 parts of fuel, you`ll need 1 part of oil.
You can do that but I wouldn`t 40 to 1 means 40 parts of gas one part of oil. 50 to1 means 50 parts of gas to 1 part of oil. So the 40 to 1 mixture is more oily and provides better lubrication for your piston rings.
For a mixing ratio of 1 : 50 you need 5 litres of high-octane gas and 0.10 litres (100 ml) of STIHL two-stroke oil.
The GOR is defined as the volume ratio of gas and liquid phase obtained by taking petroleum from one equilibrium pressure and temperature, in the reservoir, to another, at the surface, via a precisely defined path.
The theoretical air–fuel ratio mixture for a gasoline fueled engine, for complete gasoline fuel combustion, the stoichiometric air–fuel ratio is about 14.7:1. In order to completely burn 1 kg of gasoline fuel, the combustion process needs 14.7 kg of air.
40 to 1 ratio

This equals 25mls of two stroke oil to 1 litre of petrol.

If your manufacturer recommends a 50:1 fuel/oil mix, it means you need 50 parts of gas to one part two-stroke oil. To mix one gallon of fuel at 50:1, add 2.6 ounces of two-stroke oil to one gallon of gas, as shown in the chart below.
100:1 – Mix 50ml of oil per 5ltrs of fuel.

Recommended by Yamaha and Suzuki for most of their small two stroke engines up to about 30hp, this ratio requires the least amount of TCW3 two stroke oil. The result of using this ratio (less oil) is reduced spark plug fouling and less smoke.

Step 2: Mix at 50:1 (20mls oil per 1L fuel) when you`re using STIHL 2-Stroke oil.
100:1 – Mix 50ml of oil per 5ltrs of fuel.

Recommended by Yamaha and Suzuki for most of their small two stroke engines up to about 30hp, this ratio requires the least amount of TCW3 two stroke oil. The result of using this ratio (less oil) is reduced spark plug fouling and less smoke.

For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per gallon of gas.
If your manufacturer recommends a 50:1 fuel/oil mix, it means you need 50 parts of gas to one part two-stroke oil. To mix one gallon of fuel at 50:1, add 2.6 ounces of two-stroke oil to one gallon of gas, as shown in the chart below.

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What is ment by 50 to 1 mix
ANSWER : 50 to one is a ratio of fuel to lubricating oil. Typically 50 parts petrol/gasoline to one part two stroke oil.

Oil typically comes in a special plastic bottle that incoporates a measure. Simply squeeze the right ammount of oil into the little chamber and add to 5 litres of gas.

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What is fuel mixture for solo motosage 60135
ANSWER : Some say 100:1 with synthetics. I use synthetics on 80cc and larger saws in the range of 40/50:1. I never go higher than that….saws are just too expensive to be stepping over dollars to pick up pennies. A lot of people are trying to make mixing ratios like some kind of mystery voodoo. You’ll always be fine in the 40/50:1 range with a good synthetic oil.

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Do I need gas and oil mix – Poulan Super 250a Chainsaw Plate
ANSWER : I think Poulan uses a 40:1 ratio to one gallon of gas, however I have always used 50:1 the same as my sthl saws with no issue. I would rather have more oil mix that to little.

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Fuel mix oil to fuel ratio
ANSWER : The oil ratio is 50:1
Here is the website: http://homeguides.sfgate.com/oil-fuel-mixture-farm-tough-husqvarna-chainsaw-83933.html What Is the Oil Fuel Mixture for Farm Tough Husqvarna Chainsaw

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DCS520 PETROL/OIL RATIO
ANSWER : 40 to one is a good mix

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What is the oil/gas mix ratio? – Husqvarna , No.455 Rancher, 20" Gas – Powered Chainsaw
ANSWER : 50:1 ratio 2.6 fl oz of 2 stroke oil to 1 gal of fuel

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I need the gas mix oil ratio for the Poluan Pro 42…
ANSWER : 40:1 gas to oil ratio.

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Fuel mixture ratio
ANSWER : 50:1 with fully synthetic 2-cycle oil, 25:1 with semi-synthetic or mineral oil.

I use synthetic oil at 50:1 – more power, no smoke, and no fouled plugs.

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