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Engine Builder Telling Porkies !
Again I state that a 50W oil will guarantee failure of a S63tu engine and the Engine Builder stating it’s ok is in Australian parlance talking “crap”.
Their are very fine tolerances inside the S63tu engine and these engines generate a lot of heat .
Oil must flow internally when the engine is cold and hot (and that is why they recommend absolute limits on engine oil weights).
Just what mechanical engineering basis does he come to that conclusion or is it just a thought bubble !
Bmw M Engineers now more about this topic then me and frankly I’d like to see how long these engines last after “false Instagram advice” !
Cheers
Bruce
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