Thread: Drivetrain noise
View Single Post
  #10  
Old February 15th, 2022, 03:59 PM
Prowbar Prowbar is offline
-= Dues Paid =-
  
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 484
Thanks: 27
Thanked 41 Times in 25 Posts
Rep Power: 216
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: Drivetrain noise
Quote:
Originally Posted by James View Post
Should be using this:
https://www.summitracing.com/parts/p...YaAn6zEALw_wcB

GL4 has too much sulfur in it and will eat up the brass synchro. GL5 is worst.
Do you use this oil in your SM420? How does it shift?
Reply With Quote