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Gas to oil ratio is a function of the oil you are using. Mix according to what the oil says not what the manufacturer of the engine says. Those ratios could/may be the same. IF you mix 16:1 oil (do they even sell that anymore ?) at a 50:1 ratio it will destroy the engine. There will be no problems at 16:1 as the oil recommends.
I have used 100:1 Optimoil (?) when I can find it instead of the recommended 48:1 of my 2cycle. No problems.
Mix the oil in ratio the oil manufacturer says to mix.
In the Mix
All STIHL gasoline-powered equipment uses a 50:1 gasoline/oil mixture. The chart below can help you figure out the correct measurements to use. For high-performance fuel that requires no mixing, choose STIHL MotoMix® premixed fuel.
Two cycle engines run on a mixture of gasoline and oil. Each engine type is designed to run on a specific gas-to-oil mix ratio.
IMPORTANT: Use only oil that is labeled for use in "Two-cycle" or "Two-stroke" engines. Home Depot and other stores now have "premixed fuel" of gas and 2 cycle oil.
To mix two-cycle fuel, start by putting correct amount of oil in gas can. Then slowly add correct amount of gasoline. Do not try to mix gas and oil directly in gas tank of equipment.
IMPORTANT: Do not use any fuel that is over 30 days old. Do not mix more fuel than you are likely to use in a month. Old fuel can gum carburetors and prevent starting. Always use fresh fuel.
The chart below shows correct amount of oil per gallon that each mixing ratio requires. Expect that yours will be between 32 gas to1 oil and 50 to 1. 32:1 and 50:1 are most popular. RatioGAS:OILUNITED STATESOIL per 1 U.S. GALLON Gasoline
(128 oz.)*INTERNATIONALOIL per 1 IMPERIAL GALLON Gasoline
(160 oz.)*INTERNATIONALOIL per 1 LITER Gasoline
The gas oil ratio on all Poulan models is 40:1.
First, I recommend a synthetic oil mix if you can find it and also recommend running a 93 octane gasoline.
Second, I would mix no more than 1 gallon at a time, unless you are doing a lot of cutting.
Gas/Oil mixtures do not last that long. I don't give them more than a month, and generally try to run any mixture within 2 weeks.
Think about it, gas cam gum up on it's own when let sitting for too long. Imagine what it can do with oil mixed in it.
Good luck with your saw, and be careful when cutting.
hello sir, the gas / oil ratio is, 3/4 o/z per quart or 2.6 o/z per gallon of two cycle oil, any two cycle oil will do,this is how i mix mine and never had a problem,it is a good mix.hope this helps,don't forget the 4 thumbs up,any comments welcome,thank you. ~~
There is universal 2 cycle oil available (pro-mix at Lowe's for example) that is good for all ratios from 16:1 to 50:1. With this oil you add the same amount of oil to the gas independent of ratio required. One gas can, no ratio worries. Hope this helps.