Engine oil issue Options

[sixaddict]

I was talking to a non Porsche engine building /machine shop yesterday and he told me new oil formulation regulations means we need to add zinc additive in older cars
Any one out there have knowledge ( versus opinion) on this.
I use Brad Penn but he seemed to indicate this is industry wide.
He was not trying to sell me anything

[Tom_T]

IIRC one of the Brad Penn oil lines has ZPPD in it for older cars, Porsche also sells their branded oil for classic Porsches with their recco'd amount of ZPPD, & if those 2 are too expensive then there are a classic/older car oil blend by most of the major oil brands at the local FLAPS, Wallymart, etc. with the amount in the same range as the Porsche recco/product.

I don't know the ZPPD ppm recco off-hand, so can't say if Mark Henry's is what Porsche would recco.

IIRC #2 if you had valve seats hardened in a rebuild, then the ZPPD may not be necessary, but IMHO the ZPPD will still protect the other internal parts which were designed to function in the days of the old school oil with ZPPD in it.

Those who are running the modern synthetic oils may be causing problems with their classic car engines of all types (assuming still as originally engineered parts) due to the lack of ZPPD, according to my longtime factory trained 914 mechanic & others I know.

As others have said, there a a bunch of past threads on here about this subject, but you'll find it easier to do a google search for it, rather than this site's search function.

(IMG:style_emoticons/default/beerchug.gif)
Tom
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