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Topic: Lube for Posi???

in Forum: C3 Driveline Components


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Lube for Posi??? (1/3)
 3/1/09 12:48pm
corvette440hpLifetime Member
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Joined: 7/2/2006
Posts: 8205

Any thoughts on using a synthetic with a new Posi carbon fiber disc-pack (loaded unit)? They (EATON) recommend the GM additive and the GM mineral lube. How about sythetic Mobil 1, Lucas, or Royal Purple (75-90wt)? How about a break-in with mineral lube/plus additive...then changing over to sythetic?

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corvette440hp
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Lube for Posi??? (2/3)
 3/1/09 11:41pm
NorskyLifetime Member
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Burke, VT - USA

Vette(s):
SOLD - "The Toy" - '70 Convertible
SOLD - "The Beast" - '90 ZR-1 (#682)
SOLD - "Betty" - '28 Ford Model A Tudor
Still have - "BLKBRRD" - '78 Pontiac Trans Am

Joined: 1/23/2002
Posts: 7191

On a Firebird site I learned that the GM posi-additive is actually re-labeled (and significantly marked up) Chevron additive.  The fellow who posted that works in an OEM shop that builds drivetrain components for GM.  So save some money and support your local auto parts store instead of paying top dollar at the "stealership".

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Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!

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Lube for Posi??? (3/3)
 3/2/09 2:06pm
corvette440hpLifetime Member
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[QUOTE=Norsky]On a Firebird site I learned that the GM posi-additive is actually re-labeled (and significantly marked up) Chevron additive.  The fellow who posted that works in an OEM shop that builds drivetrain components for GM.  So save some money and support your local auto parts store instead of paying top dollar at the "stealership".[/QUOTE] Jim, thanx for the tip......I appreciate itThumbs%20Up

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