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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 Fri, Dec-21-2007, 01:51:17 AM   #21
Obioban
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Originally Posted by JeST View Post
You're right it is preventative maintenance. I've seen a lot of cases of the plug leaking for some reason though.... Maybe its a northeast thing?
idk. Something else to look forward to
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Old Fri, Dec-21-2007, 02:33:33 AM   #22
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Tranny and diff fluid are speced by BMW to Service 2... the same people that spec oil changes at 15k. The cost of changing the fluids vs the cost of a tranny/diff is significant enough that I think it's worth changing the fluids twice as often


I've ever heard of any tranny/diff failure that would have been prevented by changing the fluid sooner. It always seems that those types of failures are the result of some catastrophic internal failure. Not saying that they are lifetime fluids, but for a daily driver I don't think 60k miles is an unreasonable interval.

Last edited by m3 hal; Fri, Dec-21-2007 at 02:39:26 AM.
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Old Fri, Dec-21-2007, 05:42:13 AM   #23
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thanks ...this is a great thread... good job and im reserving it.!! =)
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Old Fri, Dec-21-2007, 06:21:21 AM   #24
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I think that in the DYI list, we should also list alternative and reputable products to OEM that many here have successfully used. For instance for tranny or diff oil change, Royal Purple or Redline have been used at a fraction of the cost of the BMW lifetime fluid. Make sure to include the normal legal disclaimer.
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Old Fri, Dec-21-2007, 06:26:16 AM   #25
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I think that in the DYI list, we should also list alternative and reputable products to OEM that many here have successfully used. For instance for tranny or diff oil change, Royal Purple or Redline have been used at a fraction of the cost of the BMW lifetime fluid. Make sure to include the normal legal disclaimer.
link me to specifics and I'll add a note about it
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Old Fri, Dec-21-2007, 01:50:16 PM   #26
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This isn't routine maintenance, but do you know where to find an alternatore replacement DIY? I have heard of many failures around 50k

It would also be nice if anyone has a DIY for coolant flush and/or power steering fluid flush.
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Old Fri, Dec-21-2007, 02:28:20 PM   #27
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Thanks for doing this, Ian. Let's keep this on the main board for now so everyone has a chance to see it. I can make it a sticky after some reasonable time (Ian, maybe PM me when you think of it so I don't forget).

Most BMW magazines seem to recommend swapping out water pumps and thermostats at around 60k miles as a preventative measure. IDK if e46 M3s are prone to the same failures or not.

Another thing to think about is the MAFS. They insidiously degrade over time, robbing you of power. This seems less a problem on e46 M3s than e39 M5s but they're the same design. MAFS tend to foul more readily when you run "oiled" filters rather than OEM paper, at least on M5s they do.
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Old Fri, Dec-21-2007, 04:24:06 PM   #28
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Quote:
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This isn't routine maintenance, but do you know where to find an alternatore replacement DIY? I have heard of many failures around 50k

It would also be nice if anyone has a DIY for coolant flush and/or power steering fluid flush.
Here's the link for an e46 coolant change. It's not an M3 but it should be the same procedure.

http://www.bmw325i.net/maint_coolant_change.shtml
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Old Fri, Dec-21-2007, 04:34:07 PM   #29
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Here's the link for an e46 coolant change. It's not an M3 but it should be the same procedure.

http://www.bmw325i.net/maint_coolant_change.shtml
added, thanks
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Old Fri, Dec-21-2007, 06:04:26 PM   #30
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Discussing e46 M3 Maintenance Thread 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)