i have a 89 5.0 with a t5.a buddy said i should use 80/90 gear oil.im using auto trans fluid is this right?let me know.

 

80w/90 .... wow... Thats what I use in my Chevelles locker rear end. I dont think its viscous enough for a transmission.

 

gear oil+t5= bad bad situation


stick w. atf... tell ur friend hes retarded

 

thats what i thought.he is an idiot.thanks

 

what color is atf fluid? red right?

what if its purple? what does that mean?

 

yes its red

and i just took out my BLOWN UP t5, and it was purple fluid, lol... dunno wut to tell ya tho

 

what in the hell does purple mean!??! should i be worried/ drain and replace my fluid? could this by my cause for tranny problems??

 

Aren't Royal Purple (very good fluids) products all purple?

And... If you don't know when the fluid was last changed, just change it. It's cheap insurance. I run mobil 1 sythetic ATF in mine and it shifts better than any other T5 I've ever owned (x3).

 

Before you flame away. Read my entire reply.

When I bought my car last year. Just out of pure preventative maintenance I swapped all the fluids.
I drained out what I was sure was 80 or 90 weight gear oil. Exactly what we put in differentials and older manual transmissions.

Switched to ATF, drove, drained and refilled again with ATF.

One thing I notice now that it didn't do before is it kind of crunches sometimes 2nd and sometimes 3rd on a quick shift.
I'll post a vid later for you to see. I'm at work and that link is blocked out.
OR. you can go to Youtube. on the search hit " Mustang with snow tires" jfsram

Since had the trans rebuilt and now using GM synchromesh. It still sometimes crunches.