Does my car have a limited slip differential?
Impreza 1994 WRX

Ive bought some molyslip to try stop a whining noise.

It says on the back not suitable for automatics and car that have a limited slip differential which rely on friction.

How much would i need to put into my gearbox/diff?

 

does a viscous count as friction? I would have thought that means a plated diff only

 

huh?

Also says not recommanded with gearboxes which use ATF

Does a wrx have that too?

 

Atf is automatic transmission fluid..

 

You have 2 LSD's, both viscous, not friction. 1 in the gearbox and 1 on the rear axle. Neither use ATF (unless it's an auto LOL).

Used gearbox additives a few years back as trouble selecting 3rd and a whine. Worked ok for another year till it stripped the teeth off 2nd, so may buy you some extra time. From memory I doubled the dose as the oil capacity of the box is quite large.

Good luck and start saving for a gearbox replacement/rebuild.

 

How much oil does the rear diff need? wrx 94