Zinc Rich Oil for Flat Tappet Cams

318willrun said

I think VR-1 Valvoline has 1300 ppm zinc and 1200 phosphorus (supposed to help) and will run circle track engines, drag strip engines, etc.

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According to their product info sheets, thats looks about right for the regular VR-1, even a little higher than that. Its a little lower in the synthetic VR-1.
PI Sheets