peabody george is right. thin oil will make its way thru tighter clearances......Thats why todays cars require 5 weight or even 0 weight. this is because higher visicoty oil will not lube the bearings in todays engines per manufacture specs. alot of forigen cars reqiure 0 weight oil. In all my cars and trucks I run castrol syntec 5-50 weight. It will lube the vital engine parts eeven when it is -20 and makes for easyer starting.. Plus thre oil will not break down in extream temps. inother words you get all the benifits of a "5 weight" oil when its cold and "50 weight" oil when the engine is under extream temps. best of both worlds. I would not run it in a car that has a oil leak as it is 6 bucks a quart.
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Today's Featured Article - Horsepower Defined - by Staff. Indicated Horsepower This represents the power developed in the enine cylinder as obtained from the pressure in the cylinders. This is pressure obtained from an indicator which shows cylinder pressures. Indicated horsepower does not represent the actual useful power delivered by the engine. Brake Horsepower This is the actual horse power delivered by the engine to the shaft. It is equal to the "indicated horsepower" less the friction of the engine. It is useful hor
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