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I ride a 1982 250R and I mix my fuel at 20 to 1 and havent had a problem yet and been riding it for over a year!

It also depends on what oil you are running. I run AMS Oil and it calls for a 50:1 mix. Just make sure you read the directions on you bottle of oil.

****Never use 50:1 Klotz Synthetic Oil(piston blow-by+crank bearing destruction). Unless you want to rebuild every season....

Use 32:1

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15y ago

What else can I help you with?