| |
Click on image for the lowdown. 
====
| | |
11 members (52Carl, carbking, Gdads51, Bill Hanlon, 1955 1 Series, 2-Ton, Robert Crandall, fonz8261, greenie-reddy, 2 invisible),
116
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,124 Posts1,056,347 Members48,441 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2004 Posts: 29,810 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,810 | The GL-4 has a few more additives for anti-rust, anti-foam, etc. which might not be absolutely necessary for use in a transmission, but "nice to have". The main concern is to avoid the extreme pressure additives the GL-5 has which can attack bronze parts such as synchronizer rings. I used to do a lot of business with a Fuller Roadranger transmission rebuilding shop in San Francisco when I ran a truck shop out there. They had 55-gallon drums full of trashed synchronizer rings caused by people running hypoid gear lube in Roadranger transmissions.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | |
|
|
| |
