In a message dated 99-05-23 18:16:05 EDT, HealeyRic2@aol.com writes:
> The engine builder who put
> together the bottom end of my BJ7 swears by Mobil One,
I have spent more time than my subcontractors would care to admit tearing
down aircraft turbomachinery after failures, and when we switched to
synthetic type oil I NEVER saw a coked or blue bearing again (we're gonna
change all that, right Peter? Shhhh...). I saw bearings installed backwards,
preload springs not installed, bearing carrier pins sheared, but flat-out
bearing failure never again. HOWEVER: In my Lotus the difference in oil
leaks with synthetic was terrible. Being all aluminum, I wrote it off to
loose tolerances for expansion/contraction purposes, and switched back.
Regarding the synths, I read that Castrol's is the only one that is
formulated without additional viscosity range enhancers added, and would
ultimately leave fewer deposits on the valves. I believe there is a chemist
out there---Andy?
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