REV X ZDDP Oil Additive - Zinc for Flat Tappet Cams & Engine Break in (2)

I use this in the oil for a performance flat tappet hydraulic cammed motor I built for my hot rod. As far as I can tell it works great as the valvetrain is nice and quiet, the motor has zero oil burning issues, and I've put about 13k on this performance motor.

na

excellent person to do busness with

I actually got this for an older Jeep 6 cylinder because I read great reviews about how those engines really need Zinc - and how this product helped a lot of people that used it. So I got the 2-pack thinking, 'What the heck, I'll put one in the 2007 Cadillac SRX 6 cylinder . . ." With the engine running, I opened the oil fill cap and took note of the overall 'noise level' of the engine - it was pretty quiet with what I'd call typical 'ticking.' I then added this Rev X and was astonished that in 30 seconds - as this stuff circulated through the oil and engine - the sound of the engine became almost silent! Seriously and sincerely astonished! Can't wait to put it in the Jeep!

I never heard of Zinc in older engines until a couple of months ago. I have a 65', and 79 "Toys", and never heard of zinc in oil.I did some research, and realized it is TRUE, so I will use it every oil change.....!