Hi all

I have changed oil in LSD fom Castrol 75w/140 GL-5 to Motul Gear300 75w/90 GL-5.
At cruising is all ok but when I trying drive hard car is more rally-like.
With Castrol my car was little understeered at exiting curve.
With Motul is more agressive. I can clearly feel how my front drive pulling the car in and rear drive is nervous and pushing like an rear drive car. Sometime I get oversteer but never understeer with sounds like rear wheel spinig.
Does it mean I have right oil (finally) and LSD working 100% well or I have bad oil and looking for trouble?

Thank for any comment.

Erik

P.S.
Motul said Gear300 is OK dor Impreza GT MY98.

 

I hope it is no visco... all symptomps have started right after oil change.

 

Hi Erik!
Motul specifies PA 90 for LSD's

(Also stated on the Motul forum here: http://www.motul.com/forumuk/affiche.asp?num=181

Regards,
Simen.

 

I changed mine from standard Subaru oil to Motul Gear 300 and the result was less noise through corners and lift-off (MY00 218ps AWD Euro spec)!
What model/year is your car Erik as different cars have different differentials?
JIM

 

I have GT MY98. I thing all GT`s had same diferential.

Erik

 

Different oil in your diff is unlikely to have any impact because the viscous coupling is sealed, and doesn't use lubricating oil to operate. The viscous coupling could be failing for another reason, i.e. locking up which might be responsible for your tail-happy handling.

Regards,

Alex


[Edited by AlexM - 4/8/2002 10:42:53 AM]