trans fluid and differential fluid quick question

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Feb 2, 2011 | 02:56 AM

yellow_submarine

Thread Starter

1st Gear

Joined: Dec 2010

Posts: 147

trans fluid and differential fluid quick question

Hi all! I did some research but just a little confuse. For the transmission fluid i can use motul Gear 300 75w90 right? Would that be the same fluid for the rear differential? and how much fluid will both take? As much as possible i would like to stick with the motul brand. So yeah i just wanna make sure im getting the right thing. Thanks much!

Feb 2, 2011 | 03:22 AM

BaseDrifter

Site Moderator/B5 Tech Guru

Joined: Feb 2010

Posts: 1,745

From: Bay Area, CA

IIRC, the transmission uses GL4 while the rear differential uses GL5 gear oil.

For Redline products, MT-90 for the tranny. 75W90 for the rear diff.

Feb 2, 2011 | 11:51 AM

Mike-2ptzero

4th Gear

Joined: Apr 2008

Posts: 3,274

From: Phoenix, Arizona area

Yes you can use Motul 300 in both the transmission and rear diff since it has a GL4 and GL5 rating.

Quote:

GEAR 300 75W90 100% ESTER SYNTHETIC

Motul's highest quality 100% ESTER BASED synthetic 75W90 gearbox oil. Designed for today's high performance vehicles, and all out race cars. This lubricant is virtually unshearable. Its stability at high temperatures make it ideal for extreme conditions. Many endurance professional race teams swear by this oil. Designed for transmission gearboxes and rear axles. API GL4 and GL5/MIL-L-2105C.

They also offer a gear oil for older transmissions. It is a synthetic blend.

Quote:

MOTYLGEAR 75W90 SYNTHETIC BLEND GEARBOX OIL A great high performance synthetic blend gear oil for gearboxes and rear ends. Perfect for older boxes that are harder to shift and have a tendency to "snick" or "grind" going into gear, this oil has additives which help to reduce gear mesh. A strong friction reduction package increases mileage, while extending the life of the gearbox.
API GL4 and GL5 MIL-L2105C.

Feb 3, 2011 | 04:25 AM

yellow_submarine

Thread Starter

1st Gear

Joined: Dec 2010

Posts: 147

Thanks guys. I guess i'll just stick to motul 300 then. Easier to just have one kind of fluid for both and heard it does good anyway and no complications. So yeah thank you much!