manual transmission fluid - Toyota Nation Forum : Toyota Car and Truck Forums

COYOTE556 · 05-21-2005, 02:19 PM

Hey guys,

I was changing the fluid in my 5spd manual (1994 geo prizm) and the stuff that came out looked like automatic transmission fluid. My factory service manual says to use 75w90. I was wondering what everyone else is using in their manual transmissions?

Thanks

88CorollaFX · 05-21-2005, 02:34 PM

That sounds about right. The reason it may have looked like Auto Tranny Fluid is that is has been in there for a while. I don't think it will be any kind of a problem if that's what you're asking. but the 75w90 sounds about right. I use a little thinner for my 88 corolla but that's just cause it's older. You should be ok.

bob022004 · 05-21-2005, 04:51 PM

i got the heavy duty amsoil. good for over 500K. never have to worry about changing it again. 3 quarts was 30 beans.

COYOTE556 · 05-21-2005, 11:39 PM

thanks for the info guys, i filled her with 80w90 wal-mart el'cheapo for now. may change again soon.

Limnos · 05-23-2005, 07:17 PM

I put Redline synthetic oil in my '81 Corolla last year. I suspect the synchros are getting old (DOH - in a 24 year old car

) and when I put in regular MT oil I couldn't shift gears in really cold weather (like 20 below zero F). Odd thing though, it worked fine before I changed the oil and it was probably 22-year old MT oil in the thing. Things got a bit better with the synthetic oil. I think I went with the 90 weight (whatever the owner's manual recommended).