Differential Fluid Change

[Gberg888]

What do I need to change all of the fluids for the Transmission/Front Diff and, Rear Diff?

Regards

[hightime80]

10/17mm allen socket, handpump with long tubing. 3 liters of 75w90 GL4 for the trans/centre diff and 1.5 liters of 75w90 GL5 for the rear.

[Gberg888]

Thank you!

OEM Fluid part #s?

[hightime80]

Not sure. I used redline MT90. Awesome stuff.

[PreciseD]

Not sure. I used redline MT90. Awesome stuff.

Except they say right on the bottle "MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears" which doesn't work with our hypoid transmissions.

[PreciseD]

Worth the read!

[hightime80]

https://www.ecstuning.com/b-assemble...g/n10037106kt/
Used mt90 in my trans. It's gotta be better than the 136k miles worth of OEM fluid that came out. Shifting smooth with no complaint so far. Will update if my trans falls out!
For the rear diff I just used some castrol gl5 75w90 from the local autozone.

[PreciseD]

Trust me ECS has been wrong many times. When it says on the bottle not to use it I'd like to think they know what they are talking about.

Sent from my SAMSUNG-SM-G930A using Tapatalk

[MikTip]

Motul Gear 300!

GL4 and GL5!

Same for gearbox and rear diff.

Because its synthetic!

[Spike00513]

What about this for the gearbox, and something else for the differentials, such as Motul Gear 300?

[MikTip]

What about this for the gearbox, and something else for the differentials, such as Motul Gear 300?

Where does one acquire such magic oil?

Seems they also make a 75w-85 and a 75w-90!

Also a Syn 5...full race, full synthetic 75w-90!

[seanf86]

Where does one acquire such magic oil?

Seems they also make a 75w-85 and a 75w-90!

Also a Syn 5...full race, full synthetic 75w-90!

advanced automotion sells the Fuchs oil, I'm friends with a distributor here so he gets me Fuchs oil, the sintofluid is great oil.

as for the rear diff, any GL5 75w90 synthetic will do, the rear diff of these cars don't care what fluid is in them unlike the transmission.

[MikTip]

advanced automotion sells the Fuchs oil, I'm friends with a distributor here so he gets me Fuchs oil, the sintofluid is great oil.

as for the rear diff, any GL5 75w90 synthetic will do, the rear diff of these cars don't care what fluid is in them unlike the transmission.

Exactly! All these "exotic" oils....the rear diff doesnt care...

The front gearbox's owner/driver cares...

has to shift a certain way...

mask hundreds of thousands of miles wear...

No "magic" oils out there!