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      12-13-2016, 08:22 PM   #1
gtjosh
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Redline Fluids?

I have doen some searching and really cant find anyone out there that has put redline in their DCT trans. If you have can you tell me what your experiance was? I have used redlines fluids in the past on my cars but I know some cars are picky when it comes to transmissions. Also anyone out there have results with switching over to redline in the rear diff?
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      12-14-2016, 12:54 AM   #2
The Wind Breezes
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Quote:
Originally Posted by gtjosh View Post
I have doen some searching and really cant find anyone out there that has put redline in their DCT trans. If you have can you tell me what your experiance was? I have used redlines fluids in the past on my cars but I know some cars are picky when it comes to transmissions. Also anyone out there have results with switching over to redline in the rear diff?
You can put whatever gear oil you want in the rear diff. It's not anything special, just a regular open diff. You don't need to change the fluid though. It will last a really, really long time unless you're doing something really weird...like heating the diff to 800* with a blowtorch or something.

As for the DCT you can probably put aftermarket fluids in it without problems but I'd stick with the OE recommended fluid unless you have a big reason to try something else. Why are you changing it anyway? Again, it will probably outlast your ownership of the car even if you do track events.
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      12-14-2016, 09:19 AM   #3
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Quote:
Originally Posted by The Wind Breezes View Post
You can put whatever gear oil you want in the rear diff. It's not anything special, just a regular open diff. You don't need to change the fluid though. It will last a really, really long time unless you're doing something really weird...like heating the diff to 800* with a blowtorch or something.

As for the DCT you can probably put aftermarket fluids in it without problems but I'd stick with the OE recommended fluid unless you have a big reason to try something else. Why are you changing it anyway? Again, it will probably outlast your ownership of the car even if you do track events.
I got this car at 48k and have put about 20k on the car since. I have gone to the twice in it and will start doing track events in it. I really just want to make sure I put the right stuff in and change it before it needs to be changed. I dont think the car was abused before me but I am the 4th owner so who knows. I do have a maintenence plan on the car until next July so if that will cover these two items then I will gladly take it to bmw and have them do it.
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      12-14-2016, 06:16 PM   #4
The Wind Breezes
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I track the shit out of my car, have yet to change the DKG fluid and only changed my diff oil cuz I opened it up to weld it. The trans oil really doesn't see the same stress as your engine oil (which still really only needs to be changed ever 5K even with heavy track use, modern synthetics are good shit) because there's not much to contaminate it. Your engine oil, if you chose a good one, would last 100k+ miles if it wasn't for all the blowby and crap getting in it.
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      12-14-2016, 06:25 PM   #5
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I've been using Redline oils in my 135i for years now. I have a manual trans so I have been using RL's ATF D4 in my manual trans and their 75w140 gear oil in my diff. I now am using Redline's MTL in my manual trans. I recently saw this cool video on RL...

///Drive - Dispelling Myths About Oil -- /ENGINEERED...
http://www.1addicts.com/forums/showthread.php?t=1330260




I am a firm believer in changing ALL the fluids in my car. I first changed my diff oil at 28K kms and the diff oil was really dark and nasty. I had to use a suction pump to remove the oil oil. I first used BMW Castrol in my diff and later have changed over to Redline gear oil.

DIY: manual transmission and diff fluid change
http://www.1addicts.com/forums/showthread.php?t=409293


Not a whole lot of guys have changed their DCT fluid on 1Addicts. I think most guys with an e9x M3 just use the factory DCT fluid from ZF/BMW. From what I've read the trans is the same unit except for the internal valve body from M3 to 1er dct.


Another good source for automatic fluids and parts is The California Transmission Supply Company...

http://www.thectsc.com/

Dack
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      01-12-2017, 04:47 PM   #6
mmmusty
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Quote:
Originally Posted by Dackelone View Post
I've been using Redline oils in my 135i for years now. I have a manual trans so I have been using RL's ATF D4 in my manual trans and their 75w140 gear oil in my diff. I now am using Redline's MTL in my manual trans. I recently saw this cool video on RL...

///Drive - Dispelling Myths About Oil -- /ENGINEERED...
http://www.1addicts.com/forums/showthread.php?t=1330260




I am a firm believer in changing ALL the fluids in my car. I first changed my diff oil at 28K kms and the diff oil was really dark and nasty. I had to use a suction pump to remove the oil oil. I first used BMW Castrol in my diff and later have changed over to Redline gear oil.

DIY: manual transmission and diff fluid change
http://www.1addicts.com/forums/showthread.php?t=409293


Not a whole lot of guys have changed their DCT fluid on 1Addicts. I think most guys with an e9x M3 just use the factory DCT fluid from ZF/BMW. From what I've read the trans is the same unit except for the internal valve body from M3 to 1er dct.


Another good source for automatic fluids and parts is The California Transmission Supply Company...

http://www.thectsc.com/

Dack
Dack, do you recommend then a particular Oil to change the diff and transmission fluids? Sorry if redundant, but seeing as how you have experienced with different oils i was hoping you can impart some wisdom for my 128i with manual transmission. Im looking to change both diff and tranny fluid ASAP.

Thanks brother
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      01-12-2017, 05:16 PM   #7
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Quote:
Originally Posted by mmmusty View Post
Dack, do you recommend then a particular Oil to change the diff and transmission fluids? Sorry if redundant, but seeing as how you have experienced with different oils i was hoping you can impart some wisdom for my 128i with manual transmission. Im looking to change both diff and tranny fluid ASAP.

Thanks brother
I am currently running Redline's MTL in my manual trans and RL's 75w140 gear oil in my diff. You could also run RL's ATF-D4 in your manual trans(IF you live in a cold climate) and RL's 75w90 gear oil for the diff.

You WILL need some way(tool) to suck out the old diff fluid since BMW did not provide us for a drain plug/hole. Only a fill hole is on the diff.

I am fairly happy with MTL in my trans(its gets to about -10'C and +33'C) in Germany. Right now the MTL is kind of "stiff" for those first few shifts until the trans gets warm. With ATF-D4 is a little bit smoother(cold). The MTL is better on a warm day over the D4.

Hope this helps you out.

Dackel
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      01-12-2017, 05:57 PM   #8
mmmusty
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You WILL need some way(tool) to suck out the old diff fluid since BMW did not provide us for a drain plug/hole. Only a fill hole is on the diff.

I am fairly happy with MTL in my trans(its gets to about -10'C and +33'C) in Germany. Right now the MTL is kind of "stiff" for those first few shifts until the trans gets warm. With ATF-D4 is a little bit smoother(cold). The MTL is better on a warm day over the D4.

Hope this helps you out.

Dackel[/quote]

Temperatures where I'm at rarely drop to freezing if ever (Los Angeles and global warming!) would you recommend then the MTL for warmer climates? Is there a tool you recommend to suck out the fluid from the diff? Turkey baster?

you're quite literally, always helpful and humble, thank you for that, you encourage me to post on the forums
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      01-12-2017, 10:46 PM   #9
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MIX Redline Fluids

I believe Mixing MTL & MT-90 is common place allowing you to make a ratio that matches your local temps.
.
Here in Alabama I did a 50/50 mix in my MT 6sp 335. It worked great.
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      01-13-2017, 12:36 AM   #10
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I use Redline 80W-140 in my rear diff, but it's an LSD. The 80W-140 has a friction modifier added and was recommended (actually, required, for warranty purposes) by the diff builder (Jim Blanton of Performance Gearing). I figure it's a solid fluid if that's what he specs.
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      03-16-2017, 11:53 PM   #11
Booey1979
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Quote:
Originally Posted by mmmusty View Post
You WILL need some way(tool) to suck out the old diff fluid since BMW did not provide us for a drain plug/hole. Only a fill hole is on the diff.

I am fairly happy with MTL in my trans(its gets to about -10'C and +33'C) in Germany. Right now the MTL is kind of "stiff" for those first few shifts until the trans gets warm. With ATF-D4 is a little bit smoother(cold). The MTL is better on a warm day over the D4.

Hope this helps you out.

Dackel
WTF Theres no drain hole on the diff? I have a 128i
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