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40W oil causing wear problems over 30w?
and just what fricken surfaces in a diesel engine are "closer together" enough
so that 30W oil will flow and lube but 40W won't?????? If that were the case, those "closer together" surfaces would not get lubed at all until the engine warmed up enough so that the cold 30W would flow. Even the hydralic valve lifters on a gasoline engine (with some very tight tolerances, down to a few thousands of an inch) would not operate (what a hell of a racket you would hear) on 40W or not-yet-warmed-up-to-operating-temp 30W. Oil too thick = may not lubricate completely between surfaces that are closer together, where the lighter oil is designed to flow. this is not true in an engine. the difference is important during cold engine startup. Are you daft? (retorical question) BB |
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