Low ash oil is recommended, better for valves and keeps sludge to a minimum. I like 30 weight oil best. I just run regular gas unless I will run it hard. I really like no ethanol gas for equipment seldom used....James
James' suggestions are sound. I have used 10w40 or 15w40 mostly in my gas tractors, two which are Super As, and a 140, and Farmall H. I run the 87 octane gas containing ten percent ethanol. That has worked well for me. Its a personal choice.
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