With a good oil, 20-1 will be too much. Don't mix standard and synthetic oil. Some synthetics can run up to 100-1 but most people will run them about 50-1. Optimal is a very good non synthetic oil and I run it at 50-1 in a racing two stroke moto-cross bike. Many others do as well. I have run Castrol 2 stroke oil before at about 40-1. I have run my bike in a few six hour ice races and never had an oil related failure. Oils have gotten a lot better since the 70's. Dave
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Today's Featured Article - Adding an Hour Meter - by Steven Gussey. This article tells how I added an electric hour meter to my 1942 Farmall H after rebuilding it. I wanted to keep an accurate maintenance schedule for my rebuilt engine and the implements I use with my tractor, but the H was never available with a tach
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