02-11-2019, 12:59 PM

Dick Boneske Dick Boneske is offline

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Join Date: Mar 2004

Location: Winneconne, Wisconsin

Posts: 5,388

STP Oil Treatment Zinc Content

STP oil treatment in the blue bottle (16 oz) contains zinc (ZDDP). Amazon has it now for $2.88 per bottle.

Does anyone know if it contains sufficient zinc content for our flat tappet cams in Pontiacs?

https://www.amazon.com/gp/product/B0...RYF51BX0S7P6FJ

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