The Red Line 70W90 is the most popular gear oil, this is the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.
This oil is recommended for Subaru differentials.
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED
Works good in 2002 wrx
Saltdscott56541 2 years ago
This fluid works great in my 2002 wrx. Don't listen to the people reviewing this who put this i there sti rear dif. The STI has clutches that Wes doesn't so the STI requires a different type of fluid
Works great !
Fidrat 3 years ago
In my 03 WRX rear diff, I use Redline 75W90 at the recommended interval in my owners manual.The bad reviews come from Sti owners. NOT THE SAME DIFF!! , The WRX uses a viscous LSD where the STi uses a mechanical unit. I have 54,000mi on this oil in my rear diff and I haven't given it a second thought.
mkivjacob 6 years ago
i got the same metal grinding sound in my 06 sti i am going to change it to motul and hope the same doesnt come from it!
Not too sure.
faraco3 6 years ago
I recently changed the fluid in the rear differential on my 2006 sti from the OEM fluid to this Redline 75w90 fluid. Initially there seemed to be no difference, but after 4 or 5 days I began to hear a metal on metal sound coming from the rear differential. After 7 days I couldn't stand the sound any longer, so I replaced the fluid with OEM fluid from the dealership. I don't know if the fluid hurt my LSD, but just to be safe I will keep the fluid OEM.
QUESTIONS & ANSWERS
Q: Flywheel change jdsmith123125605 5 years agoAnswer
I'm changing my flywheel in my 06 wrx and putting in an ACT streetlight flywheel what's the best gear oil to go with
A: For the transmission Redline states to use the 75W90-NS gear oil
Kirill C. 5 years ago
Q: is it ok for my diff wrxridehawaii 6 years agoAnswer
Hi is this gear oil going to be ok in my Diff(04wrx)? or am i going to have problems like the guy with the 06 sti and his diff?
A: yeah this should work great, the WRX uses a viscous LSD where the STi uses a mechanical unit. While I have never seen any problems in an STi differential, I have used this personally in several of my WRX rear diffs and I love it. Thanks. :)
Rick C. 6 years ago
This Part Fits
This item is non application specific.
Please verify compatibility before purchase. May require some modification for proper installation.