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njk53 · 03-11-2009, 05:24 PM

On my hot rod for the street I have been using Shell Rotella 15-40W and not have had any cam related problems but, I have had this case of oil around for a while. I was told that the the Feds were after the diesel oil manufacturers to lessen the amount of zinc in their diesel motor oils. Does anyone know if this has happened yet?

By the way we use Royal Purple in the race car.

03-11-2009, 05:24 PM	#14
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Stocker Flat Tappet Oil.... On my hot rod for the street I have been using Shell Rotella 15-40W and not have had any cam related problems but, I have had this case of oil around for a while. I was told that the the Feds were after the diesel oil manufacturers to lessen the amount of zinc in their diesel motor oils. Does anyone know if this has happened yet? By the way we use Royal Purple in the race car. __________________ Nelson Kowal Stock 345