OIL for my new gears...
 

Here is a simple question

I had 373s put in to replace my stock gears in my 91 coupe. The gears drove me for about 500 - 700 miles....maybe less. The car has been sitting for quite a spell now and i was playing with the idea of popping off the cover, draining and filling back up.

I need to know what the best gear oil (weight and brand) to stick and and about how much i will need. I have red that some people use some purple something or other oil. I just can remember the name. Anyone have any recommendations for me?

Also, i poked my head under it and cant see the filler hole on the case cover ...i am assuming it is on top of the pumpkin. How much oil do i put in.........i dont want to over fill.


I am also going to be putting on a polished stock intake to replace my crusty old grey one. Anyone know where i can get good quality Gasket sets for the rear pumpkin and also my upper intake manifold?

I cant wait to get started...i am probably throwing on some new headers and maybe an h-pipe as well.

If i were you i wouldnt put in a synthetic type oil in the rear, i tired that and when i was doing a burnout at the track the rear clutches were slipping and only one wheel was spinning, i talked to a rearend guy and he said it was because of the synthetic oil back there, so go with what was in it stock id say.

Gear oil...
 

I use Red Line 75W90 synthetic gear oil. Never had a problem spinning both wheels. Guess it could if the trac loc needed a rebuild, but it wouldn't matter what type of oil you used. All you need for the diff cover is RTV sealant. I use the orange RTV for the diff cover. The upper intake gasket can be found at most auto parts stores. I used the Fel-Pro and have re-used it several times with no problems.