Operation CHARM: Car repair manuals for everyone.

Fluid - M/T



Manual Transmission
5-Speed with Low Gear - RPO MW3
GM Goodwrench Synthetic Manual Transmission Fluid (GM Part No. U.S. 12346190, in Canada 10953477) or equivalent SAE 75W-85 GL-4 gear oil.

5-Speed without Low Gear - RPO MG5
Synchromesh Transmission Fluid (GM Part No. U.S. 12345349, in Canada 10953465).

6-Speed
Castrol TransSynd Synthetic Transmission Fluid approved to Allison Transmission specification TES-295 (GM Part No. U.S. 12378515, in Canada 88900701).


RPO MG5 - Transmission Manual 5-Speed, Getrag, 84mm, 4.00 1st, O/D
RPO MW3 - Transmission Manual 5-Speed, NVG, 109mm, 5.61 1st, O/D