Fluid grades

[96TOM]

I would like to change the oil in the diff's.
Can someone tell me the grades and reccommend
a type.
It is starting to get cold here (Toronto) so I
thought it would be a good idea. I have already
done the transmission fluid to Mobil.
Thanks,
Tom

 

[aldive]

I use Movil 1 75 W 90 Synthetic Gear Lube.

Good luck....

 

[Yomie]

Originally posted by aldive
I use Movil 1 75 W 90 Synthetic Gear Lube.

Good luck....

Do you have the LS rear end?

 

[aldive]

Originally posted by Yomie


Do you have the LS rear end?

Yes, with 273 gearing.

 

[Yomie]

Originally posted by aldive


Yes, with 273 gearing.

273, damn! you meant 373 right?

ok, so i could use 75W90 in my LS too right with the friction additive? is that what they used stock?

 

[aldive]

Yup, iy is 373 gearing, sorry for the screw up.

 

[Explorer58V8]

I also used mobil one 75 90 and i have Limit Slip Locker w/373 gearing.....Make sure you get the Ford motorsport friction modifer.....

Used in mom's 98 as well....all stock..... FMS friction Modifer!!!!!

 

[aldive]

I use no addatives.

 

[Explorer58V8]

if u dident use the friction modifer you will more than likely burn up ur LS if you have one!!!

 

[RTStork]

The synthetics have an additive that sometimes you don't need the friction modifier. If it chatters then add 1/2 bottle. Or just go ahead and add 1/2 bottle anyway.

 

[aldive]

Originally posted by Explorer58V8
if u dident use the friction modifer you will more than likely burn up ur LS if you have one!!!

Well in 55k miles there has been NO problems,,, When do I get to burn it up?