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Not enough zinc in them for me to be comfortable. Most Moto oils have 400 ppm more zinc in them than passenger car motor oils. Plus passenger car oils seem to shear badly in shared sump systems. Perhaps a high mileage 20w50, but still you would be better running a good diesel oil.

... serious calcium 3624 phosphorous 1110 zinc 1402 fuel. .4% soot .4...

... qns on the rxn of zinc (II) with aq ammonia...can...

... qns on the rxn of zinc (II) with aq ammonia...can...

... main point of this article--zinc, or more specifically the lack.... Oil companies started adding ZDDP (zinc dialkyldithiophosphate) to engine oil back....com/techarticles/mump_0907_zddp_zinc_additive_engine_oil/index.ht ml... old, run often with higher zinc (diesel grade 15w40 make up... in fact. It seems like zinc is the mushy sort of... rpms. Never ran it without zinc (though the trend is that...

...) peuvent inhiber l’absorption du zinc. Les tannins du thé, eux...

Zinc

... switch face and jack up zinc and posphorous...it doesn't make...