Blackstone's November Newsletter - ZDDP Levels

[Virtuoso]

I don't know how mnay of you read (or will give credit to) Blackstone's newsletters..but November's discusses a topic we see here on BITOG in increasing numbers. Good ol' ZDDP levels in the SM/SN-spec'd oils, and the effects on flat-tappet equipped engines.

http://www.blackstone-labs.com/Newsletters/Gas-Diesel/November-1-2010.php

Give it a read, even if for [censored]-and-giggles.

 

[Quattro Pete]

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2085835#Post2085835

 

[Virtuoso]

Ahhh..that's what I get for not checking all the forums. D'oh

 

[Quattro Pete]

It's OK. Interesting read, regardless.

 

[Unleashedbeast]

After looking at the UOAs, would you say that wear did increase in your engine with low amounts of ZDDP?

Will you be testing oils with high levels of ZDDP to see if the Iron/Lead levels decrease?

 

[TFB1]

I'm not sure the comparison of the flat tappet automotive with a air craft engine is valid... Most of the automotive engines that experience camshaft failure are likely running far more lift and spring pressure than the air craft engines...

 

[Ben99GT]

Originally Posted By: TFB1
I'm not sure the comparison of the flat tappet automotive with a air craft engine is valid... Most of the automotive engines that experience camshaft failure are likely running far more lift and spring pressure than the air craft engines...


Emission spectroscopy isn't a viable method for determining wear or ZDDP effectiveness regardless. And I somehow doubt aviation oil is without anti-wear agents of its own.