PNP
Member
Just wondering if anyone can enlighten me as to the difference between GL4 and GL5 specification gear oil and is the later (80w/90 GL5) suitable Diff Oil for a P6. Looking at changing out in my 68 SC Auto given I have no idea when itwas last done.
Also is that's typically used in the stearing box also?
Also is that's typically used in the stearing box also?