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 - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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