Transmission Fluid and Rear Differental Fluid capacities

[echo46]

All:
I will changing the transmission fluid and rear diff fluid along with a number of other preventive maintenance jobs next weekend. Anyway, I will be using Redline D4 ATF as per Redline instructions for the tranny fluid and 75w90 Redline gear oil for the rear diff. Two questions:

1. I'm a bit confused on which tranny my 04 6 speed zhp has--looking at Bentley, they list 4 tranny types: the Getrag, ZF, S6S420G and the GS6-37BZ. I'm trying to figure out fluid capacity and each has different amount listed. It is my understanding that I have the Getrag but is it the GS6-37BZ tranny found in the m3? Prob will get two litres no matter what it is.

2. Rear Diff oil capacity?

[kayger12]

I believe we have the non-m Getrag. Someone will jump in and confirm.

As for capacity, iirc my diff took a little over a liter and my trans took nearly two.




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[variate]

I just did mine. Differential took about 1.1 liter and transmission took around 1.7 liter. So, two each is good enough. One other thing is that my transmission drain and fill plug needed 8 mm hex instead of 17 mm bolt that everyone was showing.

[aurelius]

The manual-trans ZHP has the GS6-37BZ. Plug the last 7 of your VIN here to see fluid capacities.

I recall using Redline ATF in my E36 M3 (manual trans) but it was a long time ago and I don't remember the argument for doing so. If you have a manual, why not use Redline MTL?

[danewilson77]

2 its tranny. Or until it starts coming out fill plug.

1 qt diff.

HTC Thunderbolt+TT

[static667]

My five speed took just over a liter. Different gear box, though. I filled until it started overflowing then capped it as quickly as I could.

[echo46]

Thanks all. I bought 2 liters of the redline d4 atf and 2 liters of the rear diff oil. Also bought thermostat with housing, hoses (already have the water pump and BMW antifreeze) fuel filter, ate blue racing brake fluid from autohauz. It's a start, right? Oh yea, I am doing the icv clean first.

[aurelius]

If you have a manual, why not use Redline MTL?

^^^

Curious as to why ATF and not MTL...

[kayger12]

^^^

Curious as to why ATF and not MTL...

Fwiw-

From what I've read, the ATF makes the shifting and feel less notchy.

That being said, I've also read that the MTL is the better lubricant.

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[echo46]

Emailed redline and they recommended the D4ATF.