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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Diff and manual transmission fluid clarification



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      07-30-2018, 09:57 PM   #1
TheMidnightNarwhal
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Diff and manual transmission fluid clarification

I searched on the forums and everyone seems to get something like better or something non OEM.

I want something OEM that won't cost me 40$ a 1 litre. I live up north so I just want OEM spec and OEM weight.

What do I need to buy? It's a 335is.

Last edited by TheMidnightNarwhal; 07-30-2018 at 10:30 PM.
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      08-01-2018, 12:18 PM   #2
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I used Redline in all my cars for the past 20 years, never had a failure of any kind.

D4 ATF for manual gearbox and 75w-85 or something for diff's (both). Check Redlineoils.com for car recommendations.
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      08-01-2018, 02:55 PM   #3
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I use Redline D4 for transmission and 75w-90 fir diff. I have some for sale too.
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      08-01-2018, 06:04 PM   #4
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Quote:
Originally Posted by feuer View Post
I use Redline D4 for transmission and 75w-90 fir diff. I have some for sale too.
Quote:
Originally Posted by torrque View Post
I used Redline in all my cars for the past 20 years, never had a failure of any kind.

D4 ATF for manual gearbox and 75w-85 or something for diff's (both). Check Redlineoils.com for car recommendations.
Ok thanks guys. I'll get the 75W-90s Hightec Gear Oil by Rowe gor the diff as it's listed as OE on FCP Euro and get the Redline D4 ATF for manual trans change.

Altough I read that in cold winter it's really notchy and not good?

Any Canadians or people who drive the car in -30c can provide input?
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      08-01-2018, 06:15 PM   #5
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Ok thanks guys. I'll get the 75W-90s Hightec Gear Oil by Rowe gor the diff as it's listed as OE on FCP Euro and get the Redline D4 ATF for manual trans change.

Altough I read that in cold winter it's really notchy and not good?

Any Canadians or people who drive the car in -30c can provide input?
I drive mine in winter. Coldest -22c. Works Ok
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      08-01-2018, 10:31 PM   #6
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Any Canadians or people who drive the car in -30c can provide input?[/quote]

Yes, you should buy this. Lots cheaper than FCP when you consider that the shipping is 8 bucks Canadian from Germanparts.ca. Get 2 litres each of the Fuchs Sinto fluid - it is also an OE supplier to BMW - 75W80 is for manual trans and 75W90 for differential:

https://germanparts.ca/parts/bmw/tra.../mtf-(gear-oil)
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      08-02-2018, 11:20 AM   #7
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Any Canadians or people who drive the car in -30c can provide input?

Yes, you should buy this. Lots cheaper than FCP when you consider that the shipping is 8 bucks Canadian from Germanparts.ca. Get 2 litres each of the Fuchs Sinto fluid - it is also an OE supplier to BMW - 75W80 is for manual trans and 75W90 for differential:

https://germanparts.ca/parts/bmw/tra.../mtf-(gear-oil)
Thanks for that website! Altough for now I'm doing a big order from FCP euro and crossborder picking it up so i think I'm better off with them but if I ever need smaller quantities I'll check that website, didn't know it.

Good to know OEM viscosity. So the 3 picks FCP listed are fine? Probably go with Redline I guess since they are reputable brand?

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      08-02-2018, 09:24 PM   #8
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Thanks for that website! Altough for now I'm doing a big order from FCP euro and crossborder picking it up so i think I'm better off with them but if I ever need smaller quantities I'll check that website, didn't know it.

Good to know OEM viscosity. So the 3 picks FCP listed are fine? Probably go with Redline I guess since they are reputable brand?

Redline ATF D4 (or the newer D6) are better for cold weather shifts for your ZF 6-speed manual. Yes, ATF fluid. And of the 3 that you list, Redline is the best, in any flavor. I've used the ATF D4 in my 6-speed and it gives much better cold weather shift. Others have said that the D6 is even smoother (it is slightly lower viscosity that D4 and much lower than Redline MTL).
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      08-02-2018, 09:28 PM   #9
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Redline ATF D4 (or the newer D6) are better for cold weather shifts for your ZF 6-speed manual. Yes, ATF fluid. And of the 3 that you list, Redline is the best, in any flavor. I've used the ATF D4 in my 6-speed and it gives much better cold weather shift. Others have said that the D6 is even smoother (it is slightly lower viscosity that D4 and much lower than Redline MTL).
But here we are only talking about smoothness right and not wear increase?

Like I rather stick with OEM specs, if it worked ok in winter it must be fine.

But like by smoothness what exactly do you mean?
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      08-02-2018, 11:37 PM   #10
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Quote:
Originally Posted by TheMidnightNarwhal View Post
But here we are only talking about smoothness right and not wear increase?

Like I rather stick with OEM specs, if it worked ok in winter it must be fine.

But like by smoothness what exactly do you mean?
There is no wear increase with the Redline ATF. It is a lot easier to shift in the cold - less resistance at the shifter and faster shifts and no grinding at all in extreme cold. In this sense, it could cause less wear.

Go to Redline's website, enter your BMW in the search and you will see that Redline specifically recommends ATF and not their MTL for the ZF 6-speed manual.

Also, read this:

https://www.redlineoil.com/bmw-what-...ucts-do-i-need

Hope this helps you!
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