PROPER LUBRICATION REDUCES ENGINE WEAR.

All engines, except for small two-cycle gasoline engines (lawnmowers, outboards, etc), are lubricated the same way. An oil pump (gear) that is driven from the crankshaft through gearing pressurizes a system of drilled passages and distribution manifolds called oil galleries. These galleries then provide oil to other engine areas. Only the pistons, rings, and liners (cylinders) are not pressure lubricated. Oil is thrown or splashed on them by the crankshaft. All engine lubrication is internal, except for a turbocharged engine. The flow of oil from the start-up of the engine is described. The author also examines how the delay or oil lag can affect various engine components. Suggestions are given for minimizing engine wear.