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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Jun-29-2016, 11:19:35 PM   #21
968951M3
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Default Re: Transmission Fluid Change

How much are going to save by not using OEM?
Is the cost difference really worth it?
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Old Wed, Jun-29-2016, 11:47:18 PM   #22
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Default Re: Transmission Fluid Change

Changed my tranny fluid recently to RP, drove it for 100 miles and drained it. I saw no improvements what so ever, not knowing what it actually does I clinched my cheeks and bought a 5l jug of oe Bmw fluid. To me, extra few bucks isn't worth the constant what ifs, just sticking with what work.
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Old Thu, Jun-30-2016, 12:04:23 AM   #23
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Default Transmission Fluid Change

I think the difference with the OE fluid is it a "lifetime" fluid so it will perform better once you get some miles on it.

I would definitely recommend draining any non-OEM fluid more often. You can definitely tell when MT90 starts falling off which is about 6 hot track events. I'd get groaning from my LSD clutch plates within a year using redline 75w-140.

Long term, you're probably going to spend less with the OE BMW fluid for street use.

Either way, I'm draining my gearbox every 6 months and diff every 12 months on my track car. So Redline works fine for me.


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Old Thu, Jun-30-2016, 12:05:09 AM   #24
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Default Re: Transmission Fluid Change

Quote:
Originally Posted by BMWjunkie11 View Post
You're right, I was thinking of something I read, had my prices mixed up. Even still, everything else is much cheaper.
You get what you pay for. End of thread.
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Old Thu, Jun-30-2016, 12:23:28 AM   #25
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Default Re: Transmission Fluid Change

Good info guys
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Old Thu, Jun-30-2016, 12:41:53 AM   #26
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Default Re: Transmission Fluid Change

I just realized I have 2L of the pentosin right on my fluid shelves... score.
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Old Thu, Jun-30-2016, 12:48:59 AM   #27
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Default Re: Transmission Fluid Change

I used RedLine in my E92 for about 40,000 miles. I originally put it in to fix the difficulty I was having with the tranny when it was cold (winter driving in the 30*F to 40*F range). It was very notchy, and was frequently hard to get into 1st gear. The RedLine was a big help. However, in the warmer temperatures (above 45*F or so), I found that you had to shift a bit slower or else you would beat the syncros, and there would be a tiny bit of 'crunch' into the next gear.

I recently went back to BMW OEM fluid. The tranny is definitely shifting more smoothly, and I am not beating the syncros if I shift quickly. It is summer, so I don't know how the shifting will be in the cold weather. I still *occaisionally* have difficulty shifting into 1st.

I vastly prefer OEM fluid.

The 'lifetime fluid' line doesn't make any sense to me, unless BMW considers a 'lifetime' to be the life of their warranty.....
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Old Thu, Jun-30-2016, 01:51:47 AM   #28
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Default Re: Transmission Fluid Change

BMW redefined "lifetime" twice for the e46 m3. Originally it was "forever", then it was 100,000 miles, then it was inspection 2 (50-60,000 miles).

I still prefer inspection 1 and inspection 2

At least they didn't enforce "lifetime" like on the e9Xs. Had to drill/tap my own drain plug on my wife's e9X diff t
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Old Thu, Jun-30-2016, 01:56:08 AM   #29
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Default Re: Transmission Fluid Change

To the OP, buy the OEM 5L jug from ECS or getbmwparts and do the fluid change.

I do annually trans and rear diff changes..........Its the cheapest insurance you can get. Period
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Old Thu, Jun-30-2016, 01:59:14 AM   #30
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Default Re: Transmission Fluid Change

In used MTF2 from Pentosin. Have yet to hear one bad review of it.
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Discussing Transmission Fluid Change in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)