Quote:
Originally Posted by Keithc8
The Jo Gibbs has about 2500 PPM ZDDP in the oil and very low detergents which fight for the same mmetal as the ZDDP trying to clean it of the metal. They pretty work agaianst each other. This is the problem with most sote bought iols, the low level of ZDDP and the high detergent content. This all helps the converter last longer which is what they are after. You can no longer run oil that is approved for todays car with more than 800 PPM ZDDP in the oil because the way they have warranty the converters.
Our engines that we run in most of the older cars and high performance cars require more of the ZDDP and less detergent. This is why there were so many flat-tappet cams going down in the last 5 years. We have no problme with them as long as we run the Jo Gibbs oil. There may be some other that are similiar but if the have the AP symbol on the container thay can have no more than 800PPM of ZDDP. Hope this helps a little.
Thanks, Keith Craft |
I'm sold...don't have to have converters on my '65 Cobra replica, like to change my oil at no more than 2,500 miles so the lower levels of detergents should not be an issue for me.
Where can one buy this Jo Gibbs oil?
Thanks!!
Cheers from Dugly
