I didn't use GM stuff I used some other kind and it worked just fine no clattering. I just threw the whole bottle in and called it good.
break in oil
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Use GM gear oil for that year rear end. Most any parts counter at a GM service center will have it. Get the GM additive while you're there.
Last edited by Durango_Boy; Mar 3, 2008 at 06:55 PM.
Burning Brakes
Joined: Feb 2000
Posts: 1,246
Likes: 1
do you like hammering clutches? TJL, use preferrably 2 bottles of additive. Throw that in first and then top it off w/ ordinary hypoid gear oil, no need for synthetics.
Melting Slicks
Joined: Feb 2004
Posts: 2,040
Likes: 105
From: State of Confusion!!!
2018 C2 of Year Winner
GTR1999 did mine about a year ago. He said to synthetic. He used LUCAS 85/140 HD Gear Oil and GM additive. I ran it for 500 miles...I think, and changed it out with more of the same. He is considered by many on this forum as THE man for the job, so who am I to question him???
Gary, if you read this...no issues yet, and I don't anticipate having any!!!
to synthetic. He used LUCAS 85/140 HD Gear Oil and GM additive. I ran it for 500 miles...I think, and changed it out with more of the same. He is considered by many on this forum as THE man for the job, so who am I to question him??? Gary, if you read this...no issues yet, and I don't anticipate having any!!!
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
guess I am the exception. I used Amsoil in my 72 when I rebuilt it. No posi additive. My Father in law was an Amsoil dealer, Drag racer for over 30 years. One of the originators of Oswego Dragstrip and ran a servicestation for over 30 years. He was sold on Amsoil. Convinced me to go this route and said the additive was not required with Amsoil. I never had an issue with it. He has passed away now. Run Lucas 85-140 and additive in the 63 as per Gary's recommendation.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Pro
Joined: Nov 2007
Posts: 741
Likes: 1
From: Woodstock GA
I was warned by Moser not to use synthetic in any of their rearends...I have used it in the past on my Camaros with no issue, but I use nothing but good quality conventional oil with GM Posi additive now.
Drifting
Joined: Mar 2006
Posts: 1,526
Likes: 2
From: Oak Ridge NC
GTR1999 did mine about a year ago. He said to synthetic. He used LUCAS 85/140 HD Gear Oil and GM additive. I ran it for 500 miles...I think, and changed it out with more of the same. He is considered by many on this forum as THE man for the job, so who am I to question him???
Gary, if you read this...no issues yet, and I don't anticipate having any!!!
to synthetic. He used LUCAS 85/140 HD Gear Oil and GM additive. I ran it for 500 miles...I think, and changed it out with more of the same. He is considered by many on this forum as THE man for the job, so who am I to question him??? Gary, if you read this...no issues yet, and I don't anticipate having any!!!
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90
AMSOIL Severe Gear Extreme Pressure Synthetic 75w110
AMSOIL Severe Gear Extreme Pressure Synthetic 75w140
The reason the friction modifier additive is not required with these gear lubes is that AMSOIL blends them with the additive already in it. FYI, I use the 75w90 version in my 02 Z06.
__________________
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Thread Starter
Advanced
Joined: Feb 2008
Posts: 88
Likes: 0
From: PORT ST LUCIE FLORIDA
as soon as i get it finished i'll let you know i rebuilt every thing in the back , struts,rear ,trw340spring koni shocks, bushings ,engine has comp cam ex262,rhs heads,mas flo fuel injection, dewitts aluminum radiator ran very good before rear rebuild 1980 l82 thanks for all of your advice
Last edited by tjl82; Mar 4, 2008 at 05:06 PM.
