J JCR New member Joined Jan 12, 2021 Messages 5 Reaction score 0 Points 1 Mar 15, 2021 #1 This is hard to find locally.I got some MOPAR 75W-85 which meets GM specs however do you need to add any friction modifier ?
This is hard to find locally.I got some MOPAR 75W-85 which meets GM specs however do you need to add any friction modifier ?
