Originally Posted By: Garak
Originally Posted By: demarpaint
Is it that high in PYB, that it would exceed the level of Honda's FF? Thanks.
PYB has high moly, but it's not as high as some of the levels as we've seen in factory fills. Look at Trav's mention of and use of the paste. I think in an analysis, that would jack the moly levels right up. In fact, as others have brought up here before, I'm not so sure that some of these factory fills were moly fortified oils as much as there simply was the use of a moly assembly lube.
My theory is those engines are already broken in and by the extra moly seen in those FF oils, they want the least amount of friction and heat for those first few hundred miles after they roll of the assembly line.
Consider this break-in oil additive:
http://www.redlineoil.com/product.aspx?pid=121&pcid=21
There is no moly in it by their own analysis.
This assembly lube below has high levels of ZDDP and high levels of calcium, because they want some rust protection for rebuilt engines they may not be fired up for awhile.
http://www.redlineoil.com/product.aspx?pid=136&pcid=17
As I stated before, what you want in a break-in oil is major anti-wear additives and no friction modifiers, because you want mechanical forces to shear-off those asperities.
Friction modifiers prevent the above from happenning.
You want the anti-wear additives to prevent the removal of large volumes of material from galling, adhesion, fretting, etc.
And yes, I have rebuilt many MTs, ATs, and engines, mostly 350 and 358 SB's.