Ever read the entire break-in instructions?By now most of you maybe at least considering accepting the fact that lube oil in the combustion chamber lowers fuel octane. Applys to worn four strokes as well which draw oil into the combustion chamber. Octane requirements can increase with engine age. Any break-in instructions I've ever seen say to avoid continuous max rpm and max HP operations. " Continuous max rpm and max HP operations" is when heat builds up and combustion chamber pressures are max. Isn't that when octane requirements are the highest and the engine most prone to detonation? Once there is a layer of lube oil between the moving metal surfaces. How do some people think that any extra oil is going to improve lubrication? The extra surface oil is just going to be scrapped or forced away.Wet is wet. Lube oil lowering fuel octane is another reason why spending a few more cents for 91 or 94 octane gasoline instead of the 87. Its good insurance. Today's two strokes run faster and with more compression than two strokes of the 50's,60's and 70's. Extra lube oil is going to harm rather than help.
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Today's Featured Article - Talk of the Town: Modern Diesel Fuel in an Old Tractor - by Staff. This interestin discussion is from the Tractor Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
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