willie Posted June 6, 2022 Share Posted June 6, 2022 I am using the Shell Rotello, do i still need to put in a zinc additive?? I read the back today and i don't see anything about Zinc so i thought i would ask???? 1 Quote Link to comment Share on other sites More sharing options...
Searsman Posted June 6, 2022 Share Posted June 6, 2022 I use the same oil, I’ve always heard it has zinc but not much... so, I added one bottle to my oil...newer heads and valves do not require this I am told... my friend at auto zone that drives a 71 Chrysler told me I best use it.. so I have... experience no problems with it Willie. Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted June 6, 2022 Share Posted June 6, 2022 I used lucas hot rod oil this year high zinc contant. Was less than 50 bucks for a 5 quart jug. 1 Quote Link to comment Share on other sites More sharing options...
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