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      03-22-2010, 01:06 AM   #1
skim
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correct transmission fluid on the m?

Has no one done transmission fluid change on the m? I can't find any info!
http://www.zpost.com/forums/search.p...rchid=11486592

I want to see which transmission and lsd fluids people use on the M.
I heard that on the new bmw's, they put in ATF for manual transmission?
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      03-22-2010, 02:12 AM   #2
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Quote:
Originally Posted by skim View Post
Has no one done transmission fluid change on the m? I can't find any info!
http://www.zpost.com/forums/search.p...rchid=11486592
I want to see which transmission and lsd fluids people use on the M.
I heard that on the new bmw's, they put in ATF for manual transmission?
This subject has been discussed to death over on Bimmerfest.
I take my one gallon plastic jug down to BMW Seattle and the parts guys fill it up with SAF-XJ differential fluid and charge me $8.14 per 500ml under P/N 83 22 1 467 993.
http://www.bimmerfest.com/forums/sho...83&postcount=1
For the transmission: http://www.bimmerfest.com/forums/sho...85&postcount=3
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      03-22-2010, 07:47 AM   #3
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2008 Z4M Coupe  [7.50]
I changed mine to Royal Purple Synchromax High Performance Manual Tranny Fluid and I'm enjoying easier shifting. Supposed to keep it cooler and less friction also. Some people claim it's too thin but as I change mine very 20,000 Im not to worried about it. I know I've seen quite a few "M" guys running it for the tranny. I"m staying with the stock fluid for the diff when I change it. Here's a good "DIY" about 3/4 way down page... A great link with some good Mods... Thanks Bill

http://billswebspace.com/bmwmc.htm

Just be careful of stripping the fill nut. Id use a stubby hex from snap on if you can find one or you could have this happen and have to buy some Vise Grips...LOL

http://www.zpost.com/forums/showthread.php?t=356204
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      03-22-2010, 01:48 PM   #4
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Quote:
Originally Posted by jmillet View Post
This subject has been discussed to death over on Bimmerfest.
I take my one gallon plastic jug down to BMW Seattle and the parts guys fill it up with SAF-XJ differential fluid and charge me $8.14 per 500ml under P/N 83 22 1 467 993.
http://www.bimmerfest.com/forums/sho...83&postcount=1
For the transmission: http://www.bimmerfest.com/forums/sho...85&postcount=3
Thanks but I wanted to change to either redline or RP, not stock..
sorry if I didn't specify that clearly. but it's a good idea getting fluid like that
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      03-22-2010, 01:49 PM   #5
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Quote:
Originally Posted by mousitch View Post
I changed mine to Royal Purple Synchromax High Performance Manual Tranny Fluid and I'm enjoying easier shifting. Supposed to keep it cooler and less friction also. Some people claim it's too thin but as I change mine very 20,000 Im not to worried about it. I know I've seen quite a few "M" guys running it for the tranny. I"m staying with the stock fluid for the diff when I change it. Here's a good "DIY" about 3/4 way down page... A great link with some good Mods... Thanks Bill

http://billswebspace.com/bmwmc.htm

Just be careful of stripping the fill nut. Id use a stubby hex from snap on if you can find one or you will have this happen and have to buy some Vise Grips...LOL

http://www.zpost.com/forums/showthread.php?t=356204
awesome info
thanks!!
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      03-22-2010, 02:59 PM   #6
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Quote:
Originally Posted by skim View Post
Thanks but I wanted to change to either Red Line or RP, not stock..
sorry if I didn't specify that clearly. but it's a good idea getting fluid like that
If your Bimmer is still under factory warranty why would you want to put something other than BMW approved fluids in critical and costly components like the transmission and differential, unless, of course, you know more about lubricants than the BMW engineers
Are you using something other than Castrol TWS Motorsport SAE 10W-60 Synthetic Engine Oil?
http://www.bmwusa.com/Standard/Conte...ngineOils.aspx
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      03-22-2010, 03:01 PM   #7
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^WHS +1
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      03-22-2010, 06:43 PM   #8
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Quote:
Originally Posted by jmillet View Post
If your Bimmer is still under factory warranty why would you want to put something other than BMW approved fluids in critical and costly components like the transmission and differential, unless, of course, you know more about lubricants than the BMW engineers
Are you using something other than Castrol TWS Motorsport SAE 10W-60 Synthetic Engine Oil?
http://www.bmwusa.com/Standard/Conte...ngineOils.aspx
well engine oil i do..
but just that i've been a fan of redline and RP for tranny and lsd fluids over stock.. that's all and assumed there are more members like me
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      03-22-2010, 07:08 PM   #9
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Quote:
Originally Posted by skim View Post
well engine oil i do..
but just that i've been a fan of redline and RP for tranny and lsd fluids over stock.. that's all and assumed there are more members like me
When my warranty expires in September 2011 I may consider putting a 50/50 mixture of Red Line MTL and MT90 in my Z4M transmission and Red Line 80W-140 gear oil in the differential. Until then I'll stick with the BMW recommended fluids.
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      03-23-2010, 07:51 PM   #10
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Quote:
Originally Posted by inTgr8r View Post
^WHS +1
+2.... and make double-sure they know NOT to overfill anything. I Learned this from my experience with two dealerships who did it WRONG.
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      06-20-2011, 08:24 PM   #11
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MTF LT-2 for Z4s
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      07-20-2011, 04:54 PM   #12
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I've been running the Royal Purple Synchromax in the tranny for close to 6k now. It does feel thinner. I'm considering changing it over to Redline MTL. Maybe mixing with MT-90, not sure yet. Running Redline 75w140 in the diff for 6k also and it's been perfect.
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      07-20-2011, 09:13 PM   #13
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BG syncorshift 2, I've used it in many tranmissions with excellent results. Shifts much better than OEM, I'll post analysis from Blackstone soon.
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      09-13-2011, 11:13 AM   #14
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Im using Pennzoil Synchromesh right now and I like it. May try RP or Redline this time idk
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      09-13-2011, 05:45 PM   #15
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did yall notice a difference in shift feel? i think that my car may really benefit from this.
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      09-13-2011, 06:10 PM   #16
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Quote:
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did yall notice a difference in shift feel? i think that my car may really benefit from this.
RP - Yes...
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      09-13-2011, 06:50 PM   #17
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yeah definitely its a lot smoother than stock. If you havent done it already look into the CDV delete also it makes a big difference. Im gonna be doing the clutch stop this week
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      09-15-2011, 05:51 PM   #18
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the clutch stop and cdv really help but im still surprised on how crappy the shift feel is on the M at times....
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      09-15-2011, 07:24 PM   #19
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The Transmission was not designed for this car's drive train or power... It sucks period. I purchased an extended warranty because I fully expect it to fail at one point.
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      09-19-2011, 01:06 PM   #20
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You know the ZF transmission is stronger than the transmission in the M3 right?
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      09-19-2011, 02:20 PM   #21
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The Getrag 420G transmission in the e46 M3 and others was designed to handle the torque load placed on it by the S54 and similar motors. The ZF Type H in our cars apparently was not. Fact is it was added to Z4M cars because the Getrag would not fit. I have never seen the torque spec on BMW part # GS6-37BZ (ZF Type H), however, many have speculated its not up to the job or Getrag e46 M3 unit.
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      09-19-2011, 05:35 PM   #22
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i will check the torque spec but my friend who is a BMW fanatic said the ZF is capable of handling about 1000 horsepower just like the Getrag does on the HPF M3's. If youve ever driven both they pretty much feel the same. Notchy in first and second gear and a slight whine due to the design of the gears
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