I only use synthethic oil. Small engines to big engines. Currently using Castrol Edge, and AMSoil and Royal Purple. Use it in crankcase, transmissions, grease fittings, hydraulic tanks,trasfer case, differentials - anything and everything. It lasts longer and significantly reduces friction. For example if you put Royal Purple synthetic oil in a small block Chevy you will pick up 8 to 12 hp and ft lbs torque. That is a lot without changin a thing. No simple bolt on could add that kind of power for that price. Think about that huge reduction in friction - 8-12 hp/ft lbs - wow! AMS transmission fluid lowers temp in trans and that means longer life. So I will run the synthetic engine oil for 10k miles about 3 times as long as convential oil so the cost is about the same and I get a 2% plus increase in gas milage (which puts me in the black without even considering much improved friction protection and longer engine life and important to me, a lot less time changing oil). To me it is a no brainer. Pays for itself and then some. Facts are facts.
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Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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