<VV> My final gear oil note - can't speak for others!

[Sethracer at aol.com]

Randy writes:
"Ok, guys........after all the hubbub and crap going on about the CORRECT  
tranny/gear lube for our Corvairs,  as an Amsoil dealer, I finally called  
them and talked at length to a tech rep.  It seems about everyone on here  
and their info is pretty much full of crap.  . . .  As far as  Amsoil is 
concerned, GL - 5 is the only gear lube to use!!!!!!!  It  won't hurt a thing!" 
 
So Seth writes:
That is the great thing about a religion, in can justify almost anything.  
<grin>
 
But, seriously, Randy - Amsoil lists their own GL4 lube. Here are their  
listed "benefits": (Note #3)
 
Promotes Longevity in Front-Wheel-Drive  Transaxles
Synthetic Manual Transmission Gear Lube meets 75W/80W-90  viscosity 
requirements and exceeds API GL-4 performance requirements for many  
front-wheel-drive vehicles. Its excellent gear protection, extreme-temperature  
performance and durability promote maximum longevity and reduced maintenance  costs.
 
    *   Protects against increased heat and pressure 
    *   Outstanding cold-flow properties 
    *   Protects brass synchronizers 
    *   Friction-modified 
    *   Excellent seal compatibility 
    *   Inhibits rust and corrosion 
    *   Long service life


But if you read their recommendations for their GL5 spec gear oil,
Their product name: 75W-90 Long Life Synthetic Gear Lube,
 it only recommends it for axles if GL4 was the  original spec.
 
"Use AMSOIL Long Life Synthetic Gear Lube in differentials, manual  
transmissions or other gear applications where one or more of the following  
standards are specified: API GL-5 & MT-1, MIL-PRF-2105E, Dana SHAES 234  (Formerly 
Eaton PS-037) for 250,000 miles, Dana SHAES 256 (Formerly Eaton  PS-163) 
for 500,000 miles, Dana SHAES 429A, Mack GO-J & GO-J+, Meritor 0-76N  (75W-90) 
& 0-80 (80W-140) plus hypoid gear oil specifications from ZF TE-ML  07A and 
08 foreign and domestic manufacturers such as GM, Ford and Daimler  
Chrysler. It can also be used in rear axles where API Service GL-4  lubricant is 
recommended."
 
I added the bold above. So, if you wish to run Amsoil, why  not run their 
GL4 product? It is what AMSOIL recommends. -  Seth
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