QUESTIONS & ANSWERS

• Q: Gear 300 vs 90PA  Dario j4 months ago

  I have a 2002 wrx wagon and i see that the gear 300 fluid is reccomended for the rear diff but others reccomend using the 90PA for rear diff on a 5speed WRX. What oil should i use for trans and rear diff?
• • 1 of 1 people found the following answer helpful

    A:  We do not recommend 90PA for the WRX as it has open differentials and not mechanical limited slip differentials like the 04-06 STi. For the WRX we recommend Motul Gear300 for the transmission and rear differential. You will need 5qts total to complete the fluid change.

    Jared A. @ RallySport Direct 4 months ago  
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• Q: LSD Differentials  jaymie981 year ago

  RSD, I have 2007 Subaru Forester XT with a JDM Forester STI 6 speed which has 2 Suretrac LSD,s (front & rear). I purchased the Motul 90pa for both diff & gearbox but the gearbox seems to have a slight wine & vibration over 70mph, any recommedations?
• • 1 of 1 people found the following answer helpful

    A:  It could be that the oil that you put in your transmission has a high viscosity which might give you a slight whine. However it could also be your clutch parts. I would start by diagnosing any clutch issues and if the clutch is all good go with a different trans oil.

    Tyler A. @ RallySport Direct 1 year ago  
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• Q: 2009 sti   dubaru3 years ago

  Will there be any gains or positives to using this over the standard motul 300 in my rear diff? If not then Ill just purchase the motul 300. Secondly, what should I use for my front diff? I see everyone talking about tranny and rear diff but not front diff.
• • 0 of 0 people found the following answer helpful

    A:  This fluid is for clutch-pack or plate type differentials. In 07+ STi's that use a torsen you can simply use the standard Motul 300. The 90PA can be used, but its not needed as your Torsen LSD does not require a special fluid like a clutch type unit that the 04-06 STi have. This is not recommended for the Transmission(which houses the front and center diff) on the STi due to the friction modifier that is added, The Motul Gear 300 is a better option for the 6MT Transmission.

    guest569558ee2a8d252b708e85a3 @
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• Q: 2013 WRX ?  jcerillo70215514 years ago

  Is this the right stuff i need to replace the rear differential fluid in my 2013 WRX Hatch? Thanks!
• • 0 of 0 people found the following answer helpful

    A:  No, you will want to use MOU 3178CZ.

    guest56ad69792a8d256e198b66b5 @
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• Q: JDM 04 Sti  Ejzok4 years ago

  What's the different between PA90 and 300 (both non-LS and LS)??? Im so confus I run trackday twice a month, so please recommend which one should I be using for Gear and Rear Diff, thanks!
• • 0 of 0 people found the following answer helpful

    A:  The PA90 is more useful for clutch type unit that comes in this 04-06 models where as the 300 is a more generic gear oil. You could use either without any issues.

    guest57853c642a8d25b5018c44a7 @
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