do i change auto trans fluid on 335i at 50k? - BMW 3-Series (E90 E92) Forum

335fourdoor · 01-06-2010, 10:26 PM

just went over 50k,wondering how many people changed auto trans fluid on their car at 50k?what else needs to be changed at this mileage? thanks for replies.

hun77777 · 01-07-2010, 06:17 AM

Quote:

Originally Posted by 335fourdoor

just went over 50k,wondering how many people changed auto trans fluid on their car at 50k?what else needs to be changed at this mileage? thanks for replies.

i'm on the same page with you on this buddy...

chromisdesigns · 01-07-2010, 01:24 PM

You should change it by 60K, if you plan on keeping the car, or playing fair for the next guy who gets it...

You'll have to pay for it, of course, since even though BMW has abandoned the nonsensical "lifetime" fluid idea, they still want to let it go 100K before changing it. Not good for transmission life!

I plan on doing mine every 50K. I did that with my E36 M3 and when I finally sold it at 130K miles, had never had any trans problems at all. Whereas many auto boxes on those cars had been replaced between 80-120K where the fluid had never been changed.

Turkeybaster115 · 01-08-2010, 11:33 AM

Do a

: with my name!

FCPGroton · 01-08-2010, 05:35 PM

I would do it at 50K. It is not hard so you could do it yourself and save the dealer labor. If you do take it to the dealer, they will charge you unfortunately.

raceyBMW · 01-08-2010, 05:41 PM

Do make sure that if you decide to do it yourself, pick up a Bentley manual, because there is a very specific procedure and temperature the fluid needs to be to ensure a proper fill.

hun77777 · 01-08-2010, 07:46 PM

Quote:

Originally Posted by raceyBMW

Do make sure that if you decide to do it yourself, pick up a Bentley manual, because there is a very specific procedure and temperature the fluid needs to be to ensure a proper fill.

really? like what?

raceyBMW · 01-08-2010, 08:45 PM

Fluid temp. must be between 86-120°F to get accurate reading of level. The ATF temp. can be read by a BMW Diag. tool. I emailed BavTech if their tool can read the ATF temp., and they said at this time it does not have that feature, which is unfortunate. Level is correct if fluid flows out of fill hole at these temps...Bentley says better to check at 85 than 120.

Also, use a new sealing ring on the fill/drain plug every time you open it up (if it has them, I don't really see that the drain plug does on realOEM)

Use loctite on pan bolts when reinstalling. There is also a specific order to tighten the bolts.

01-06-2010, 10:26 PM	#1
335fourdoor Captain Drives: 335 e90 Join Date: Jul 2009 Location: west Posts: 671 iTrader: (3)	do i change auto trans fluid on 335i at 50k? just went over 50k,wondering how many people changed auto trans fluid on their car at 50k?what else needs to be changed at this mileage? thanks for replies.
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01-08-2010, 05:35 PM	#5
FCPGroton Lieutenant Drives: Volvo 850 T5 Join Date: Aug 2009 Location: Old Saybrook, CT Posts: 462 iTrader: (0)	I would do it at 50K. It is not hard so you could do it yourself and save the dealer labor. If you do take it to the dealer, they will charge you unfortunately. __________________ FCP Groton Dan Clayton 877-634-0063 ext. 213\| dan.clayton@fcpgroton.com FCP Euro - European Car Parts Specialists FCP Import - Import Replacement Car Parts

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01-07-2010, 01:24 PM	#3
chromisdesigns Lieutenant Colonel Drives: 2008 BMW 335i sedan Join Date: Jan 2010 Location: San Francisco Posts: 1,741 iTrader: (0)	You should change it by 60K, if you plan on keeping the car, or playing fair for the next guy who gets it... You'll have to pay for it, of course, since even though BMW has abandoned the nonsensical "lifetime" fluid idea, they still want to let it go 100K before changing it. Not good for transmission life! I plan on doing mine every 50K. I did that with my E36 M3 and when I finally sold it at 130K miles, had never had any trans problems at all. Whereas many auto boxes on those cars had been replaced between 80-120K where the fluid had never been changed.

01-08-2010, 11:33 AM	#4
Turkeybaster115 Banned Drives: 335I Join Date: Jun 2009 Location: Illinois Posts: 1,546 iTrader: (2)	Do a : with my name!

01-08-2010, 05:41 PM	#6
raceyBMW king of the hills Drives: 335i coupe Join Date: Dec 2006 Location: Denver, CO Posts: 2,461 iTrader: (1) Garage List 1994 530i [4.25] 2007 335i Coupe [4.07]	Do make sure that if you decide to do it yourself, pick up a Bentley manual, because there is a very specific procedure and temperature the fluid needs to be to ensure a proper fill.

01-08-2010, 08:45 PM	#8
raceyBMW king of the hills Drives: 335i coupe Join Date: Dec 2006 Location: Denver, CO Posts: 2,461 iTrader: (1) Garage List 1994 530i [4.25] 2007 335i Coupe [4.07]	Fluid temp. must be between 86-120°F to get accurate reading of level. The ATF temp. can be read by a BMW Diag. tool. I emailed BavTech if their tool can read the ATF temp., and they said at this time it does not have that feature, which is unfortunate. Level is correct if fluid flows out of fill hole at these temps...Bentley says better to check at 85 than 120. Also, use a new sealing ring on the fill/drain plug every time you open it up (if it has them, I don't really see that the drain plug does on realOEM) Use loctite on pan bolts when reinstalling. There is also a specific order to tighten the bolts.