Tranmission Fluid

[Stevo]

Hi,

I need to top my transmission fluid. Does anyone know what kind of fluid the 91 2.5L manual, 2wd, takes??????

Thanks,

Stevo

[T Man]

At the shop we always used Castrol Gear oil and were really happy with it.

[Stevo]

Thanks T-Man

[Sparky2263]

The factory fluid is ATF (yes, in a manual tranny). If you use gear oil (90W, etc.) it will become harder to shift gears and near impossible in sub-freezing weather. An excellent alternative is Syncro-Mesh trans. fluid. Slippery as owl **** and GM recommends it. Kinda' pricey, but worth it IMO.

[T Man]

We used 75-90, but I would go with the synchromesh. We didnt have the option to use that there. Use the synchromesh.

[jjwalker]

Hmmm, never seen rear end oil in a standard. We used 10-30 motor oil.

But my knowledge and experience with manual trans is limited.

[Sparky2263]

90W was the standard oil for manual transmissions until the late 70's early 80's. Believe me, when I first saw ATF in a gearbox, I 'bout ****. We started draining it out and putting 90W back in at first. OOPS! No shifting when cold.

'course, I've still got my points file from back when also. ;)

[T Man]

Speaking of points and such................;)