ZDDP Question

just when I thought this thread was starting to slow down, I found this test that was very eye opening on ZDDP levels and how they are not the only factor in protecting your engine.
I also post this link because they also test ZDDP additives and none of them helped! in fact they reduced the protect and sometimes by a big percent!
http://www.sccoa.com/forums/showthread.php?136304-What-oil-brands-offer-the-best-protection-***Good-read***

Alot of those private label oils that thread listed are total garbage I wouldn't use them on a mountain bike chain. .

It could all be a ploy to sell oil too...lots of snake and alligator oil.

However a wear test is really a better indicator, zinc is really for break in oils typically , probably in marvel mystery oil , zmax, too.

Some of the marine oils were actually made or spec'd for certain inboard i/o manufactures for example Mercury wanted a 25-w40 ,

curiouslibra wrote: Oops sorry I missed the link. I was just more concerned with the poster that said he used Lucas ZDDP additive to bring up his ZDDP levels but the test show that it did more harm than good and since I didn’t see anybody tell him to go look at the chart I assumed no one had already posted that here sorry.

Think you are confused about what product you are talking about. The study tested a different product than what I had posted. I have no factual information about where the Lucas product rates.
BTW I can't recall reading where a CCF person has experienced a camshaft failure due to oil related issues.
Pete you are right: it's a cold hard winter

I'm on my 4th cam already, and I've changed fluids regularly.

Guessing that the valve springs on that '51 flat head were not high strength!

That's like ancient times Pete.

Anybody born in the early 50's or earlier is really OLD. You and Gary and Duane and oh yea, me come to mind Can't forget JBear,his brother Bill, Jackie Deen,SNObsessed, a really really old guy named Grant and I'm sure quite a few others that I just can't remember right now

Or is it experienced?

But anyways, I asked Google and came up with the article in the link. It was printed in 2009.

It would suggest 300 ppm or .03% for corrosion back then and then it was jacked up to 800 ppm in the mid 50's for camshaft wear reasons.

I figure it's interesting reading and probably won't really change anybody's thoughts that they already have about ZDDP levels and what's needed or not needed.

There have been changes like SN rated oils and CJ-4 and CK-4 diesel oils since it was written



link