Thanks.Well, I uncovered the varnish over the ratio on the engine.For proper operation mix 3/4 PT. blank-W30 with 1 gallon of gasoline. That would be 21.3:1 . I dont see any weight on the the 2 cycle oils I have. Also 3/4 pint is 6 oz, right? And a gallon is 128 oz, right? Why does the manuf. Ratio chart state 6 oz per gallon = 24:1? 16:1 works out and 16:1 works out but 6oz per 128 oz. comes out to 21.3.<br /><br />Hep me! please.<br />