Re: ZINC IN OIL & ZINC ADDITIVES
Todays Rotella is low on zing because of the diesels running cats now.If you can still find some old API service CI-4 plus Rotella you'll be in good shape.I myself still have about one gal.left of this type of Rotella.I also been adding ZDDPlus additive in my 10W40 oil for a few years now.For my L34 Nova i've been using VR1 20W50 oil,but i think i'll start using VR1 in all three of my cars soon.
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