rear end lube update

[laborboy@xxxxxxxxxx]

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Bounces like rubber! Shatters like ceramic! Discover Crazy 
Aaron's Thinking Putty in grown up handfuls. It's the 
creativity unleashing, mood enhancing desk toy!
caab8Ldb7yoMza/ Crazy Aaron Enterprises
===========================================================

I had asked whether I could use GL-5 rather than GL-4 specified in the 
manual, and I found this interesting post:

"I first made inquiry of the various oil companies (in USA only) easily 
found on the web and asked if they had a GL-4 gear oil and what happens 
if API GL-5 gear oil is used in an API GL-4 gear oil application.  The 
consistent and typical answer was, "...if an API GL-5 gear oil is used 
in an application where API GL-4 gear oil is called for, chemical 
corrosion of "yellow metal" components may occur, such as bronze 
synchronizers, brass bushings, etc. This may lead to shifting 
difficulties or shortened life. "[Pennzoil web site] "Typically, GL-5 
gear oil will have about 2 times the active additive level of a GL-4 
Product.  This additional additive can cause problems with yellow metals 
such as brass or bronze. "[Castrol tech email]. The only oil companies I 
contacted which said they had a GL-4 product were Pennzoil, Castrol & 
Valvoline."

Are there any such "yellow" metals in our 64 rear ends?

Zack

===========================================================
Bounces like rubber! Shatters like ceramic! Discover Crazy 
Aaron's Thinking Putty in grown up handfuls. It's the 
creativity unleashing, mood enhancing desk toy!
caab7pJb7yoMzf/ Crazy Aaron Enterprises
===========================================================

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