Gear oil for LSD (STT) differentials - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 06-20-2019, 08:05 AM Thread Starter
 
michaelfind's Avatar
 
Join Date: Dec 2018
Location: Waco, Texas
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Gear oil for LSD (STT) differentials

I have a limited slip differential from 1969. I last changed the gear oil in 1986 or 1987. This car has not been driven much in the past 20 years. I am installing a new stroker motor and want everything to be fresh to reduce risk of damage to the drivetrain. Transmission fluid and filter change seems like a good idea. I was also planning to change the gear oil until I discovered there are issues with "new, improved" gear oils in our old cone type posi units. I have some fairly old NAPA Premium Performance gear oil, still sealed in the bottles that I purchased about 10 years ago. The label states that it is for use in "both regular and limited slip differentials." It does not state if it already has an additive for LSD, or even if it is conventional or synthetic. It is rated "GL-5, GL-4, GL-3." The part number is 75-210. I do plan to add the AC Delco limited slip additive whether I use this oil or not.

Suggestions please?
michaelfind is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome