E90Post
 


PYSPEED
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Brown coolant?



Reply
 
Thread Tools Search this Thread
      08-05-2012, 11:21 PM   #1
sredwine
New Member
1

 
Drives: 2007 328i 6S Sport Pkg
Join Date: Sep 2010
Location: Atlanta


Posts: 19
iTrader: (0)

Brown coolant?

I just changed the coolant in my 2007 328i. The old coolant is brown-looks like apple cider-no oil in it, no foam, doesn't smell odd. When I looked at it before (as in checking specific gravity with a bulb type tester), it was blue-green-the factory coolant color. Over the last 22 months I've had the car, I have added maybe a pint or two of green coolant and distilled water. Has anybody seen this before? Does the BMW "lifetime" coolant just turn brown with age? It doesn't look like rust, by the way-not really cloudy and not that color. Rust would be unlikely in a magnesium and aluminum engine anyway.

Thanks-love my car, BTW-6 speed with sport package.
Appreciate 0
      08-05-2012, 11:22 PM   #2
Dozhdbog
Lieutenant Colonel
United_States
17

 
Dozhdbog's Avatar
 
Drives: 2011 335i Sedan
Join Date: Aug 2011
Location: Hollywood


Posts: 1,512
iTrader: (0)

If it's brown, flush it down.
__________________
2011 E90 / Premium Package / Stage 2 PPK / Performance Suspension
Appreciate 0
      08-05-2012, 11:58 PM   #3
flexbrah
hehe ty men
1

 
flexbrah's Avatar
 
Drives: :|
Join Date: Jul 2012
Location: Tampa, FL


Posts: 119
iTrader: (1)

Lifetime coolant is 100% BS. Good thing you flushed yours out.
__________________

help
Appreciate 0
      08-06-2012, 08:45 AM   #4
Surly73
Captain
Canada
10

 
Drives: 2007 E90 328i 6MT sport/prem
Join Date: May 2012
Location: Oakville, Ontario


Posts: 724
iTrader: (0)

Quote:
Originally Posted by sredwine View Post
I just changed the coolant in my 2007 328i. The old coolant is brown-looks like apple cider-no oil in it, no foam, doesn't smell odd. When I looked at it before (as in checking specific gravity with a bulb type tester), it was blue-green-the factory coolant color. Over the last 22 months I've had the car, I have added maybe a pint or two of green coolant and distilled water. Has anybody seen this before? Does the BMW "lifetime" coolant just turn brown with age? It doesn't look like rust, by the way-not really cloudy and not that color. Rust would be unlikely in a magnesium and aluminum engine anyway.

Thanks-love my car, BTW-6 speed with sport package.
The "green" you put in *might* be incompatible with the factory G-48. It might be that blue + enough green = brown. You may have something else in the system breaking down and forming some sediment.

Has Redline WaterWetter or any other similar product ever been in the system?

I'll say it for the benefit of anyone listening - NEVER, EVER put Waterwetter in BMW (or any other G-48) coolant. The WW reacts with the G-48 and precipitates a brown, greasy deposit inside the cooling system and floating in the e-tank.
Appreciate 0
      08-06-2012, 09:04 AM   #5
DASHOCKER
The power of V!
Germany
33

 
DASHOCKER's Avatar
 
Drives: 2007 335i coupe steptronic
Join Date: Aug 2007
Location: NYC


Posts: 1,867
iTrader: (0)

Garage List
1998 Lexus Gs400  [0.00]
2010 ebony & ivory  [0.00]
2006 BMW X3  [0.00]
2009 pics  [0.00]
2009 e92 335 xdrive  [0.00]
Send a message via Yahoo to DASHOCKER
never mix bmw with another brand. the same applies to toyota red coolant..
__________________
2007 335 coupe Alpine white, steptronic, sportpack, etc. (gone)
2006 X3 3.0 steptronic Titanium Silver, 2009 E92 335xdrive, next.... Caddy CTS_V! 13 Lincoln MKZ? hmmm.
Appreciate 0
      08-13-2012, 10:21 PM   #6
sredwine
New Member
1

 
Drives: 2007 328i 6S Sport Pkg
Join Date: Sep 2010
Location: Atlanta


Posts: 19
iTrader: (0)

Coolant staying green

Just a follow up to my previous post. My new green coolant (I'm going to change every two years, so don't need "lifetime" OAT blue-green BMW coolant) is staying green. Maybe the small amount of green mixed with the aging OAT coolant just turned brown. Nothing like a water pump burning out or anything like that (he said, knocking on wood).
Appreciate 0
      08-13-2012, 11:23 PM   #7
flexbrah
hehe ty men
1

 
flexbrah's Avatar
 
Drives: :|
Join Date: Jul 2012
Location: Tampa, FL


Posts: 119
iTrader: (1)

"lifetime coolant" is 100% bullsh*t. if its old enough to turn brown... its a good thing you flushed it. just make sure you bled the system correctly!
Appreciate 0
      08-14-2012, 06:55 AM   #8
Surly73
Captain
Canada
10

 
Drives: 2007 E90 328i 6MT sport/prem
Join Date: May 2012
Location: Oakville, Ontario


Posts: 724
iTrader: (0)

Quote:
Originally Posted by sredwine View Post
Just a follow up to my previous post. My new green coolant (I'm going to change every two years, so don't need "lifetime" OAT blue-green BMW coolant) is staying green. Maybe the small amount of green mixed with the aging OAT coolant just turned brown. Nothing like a water pump burning out or anything like that (he said, knocking on wood).
The chemistries chosen aren't just about "lifetime". BMW's coolant is G-48, and they've been using G-48 long before any fluid in the car was claimed as "lifetime", let alone the coolant.

G-48 has specific plastic compatibility factors which are not present in other coolants. Were I in your position, I wouldn't jump to the conclusion that you're further ahead with whatever "green" is just because you plan on changing it. I still stick with G-48 (whether there's a BMW logo on the bottle or not) and change it every 2-3 years. I've found even BMW branded G-48 to be within a couple of dollars of anything else. I'm not sure why people go to such lengths to avoid it. If you don't have a BMW dealer nearby, check out a Volvo dealer. Or ask for G-48 at local auto shops. Or if you're in the US order online from somewhere like bavauto or Amazon (with free shipping no less).

My previous BMW was an E39 from the golden era of plastic cooling system unreliability. We're particularly sensitive to anything concerning the plastic so the notes on G-48's plastic compatibility properties caught my attention. Even though the E90 is not fragile in this area, there's still a crap load of plastic in the cooling system.

Perhaps it bears stating that I ran G-48 throughout the 14 year life of my E39 and I had no cooling system failures except a slow leak (no explosions) at the thermostat housing - a $15 part.
Appreciate 0
      08-14-2012, 10:17 AM   #9
Whit
Private
United_States
0

 
Whit's Avatar
 
Drives: 06' 325i, 09' X5 30i, 67' 912
Join Date: Jul 2012
Location: Nor Cal


Posts: 83
iTrader: (1)

Garage List
2006 BMW 325i  [0.00]
Old rule of thumb was brown coolant was a sure sign of rust in your system somewhere and you where heading down the road to a radiator failure or otherwise. Might be a ways off from some sort of breakdown but brown coolant is worse than just being "old".
__________________
Whit
Northern Nor Cal
Appreciate 0
      08-15-2012, 12:53 AM   #10
mike3000fl
Eleven Bravo
28

 
mike3000fl's Avatar
 
Drives: 06 330i
Join Date: Feb 2010
Location: Tampa


Posts: 2,229
iTrader: (0)

i have a shit ton of miles and when i flushed mine at 100,000 miles it was brownish orange also.

i assume that somewhere along the line someone did a coolant change with the wrong stuff.

i flushed it and put in the proper blue with distilled. no issues.
__________________
2006 330i - Jet Black - 19" E46 M3 wheels - HR Sport - 206,000 Miles...

Appreciate 0
      08-15-2012, 06:28 AM   #11
Cisco661
Cisco661
United_States
13

 
Cisco661's Avatar
 
Drives: 2006 Monaco Blue 330I
Join Date: Jul 2011
Location: California


Posts: 921
iTrader: (17)

Garage List
2006 BMW 330i  [0.00]
Quote:
Originally Posted by Dozhdbog View Post
If it's brown, flush it down.
+1
im bout to hit 70k on my 06 330i and will be doing a coolant flush within next few weeks. will be going to dealer for some fluid. do i need just one?
__________________
2006 330i/ Monaco Blue/ ZSP/ ZPP/ I Drive/ Burl Walnut Trim/ Steptronic/ Xenon Adaptives/ Logic7/ CF Mirror Caps/ Matte Black Grills
Appreciate 0
      08-15-2012, 12:39 PM   #12
sredwine
New Member
1

 
Drives: 2007 328i 6S Sport Pkg
Join Date: Sep 2010
Location: Atlanta


Posts: 19
iTrader: (0)

Coolant amount

Cisco, you need a gallon of straight coolant or two of 50/50.
Appreciate 0
      08-15-2012, 05:05 PM   #13
Cisco661
Cisco661
United_States
13

 
Cisco661's Avatar
 
Drives: 2006 Monaco Blue 330I
Join Date: Jul 2011
Location: California


Posts: 921
iTrader: (17)

Garage List
2006 BMW 330i  [0.00]
does the dealer only sell approved coolant or is there some available at like autozone?
__________________
2006 330i/ Monaco Blue/ ZSP/ ZPP/ I Drive/ Burl Walnut Trim/ Steptronic/ Xenon Adaptives/ Logic7/ CF Mirror Caps/ Matte Black Grills
Appreciate 0
      08-15-2012, 05:29 PM   #14
John 070
Lieutenant General
150

 
Drives: 335i cpe
Join Date: Oct 2006
Location: ZSP/ZPP/ZCW


Posts: 11,483
iTrader: (0)

Quote:
Originally Posted by DASHOCKER View Post
never mix bmw with another brand. the same applies to toyota red coolant..
I've heard the complete opposite, although I'd prefer to keep my bmw lifelong bmw.

I used dex cool which is pink/orange, in my nissan which was blue. The color is in-between, and I don't care. Not going to pass up free coolant at these prices!
Appreciate 0
      08-15-2012, 05:49 PM   #15
Surly73
Captain
Canada
10

 
Drives: 2007 E90 328i 6MT sport/prem
Join Date: May 2012
Location: Oakville, Ontario


Posts: 724
iTrader: (0)

Quote:
Originally Posted by Cisco661 View Post
does the dealer only sell approved coolant or is there some available at like autozone?
Like I said above - it's G-48. Any G-48 should be the same stuff - Zerex, BASF, Volvo OEM... but you're not going to save much money. It may take some research to find what other factory coolants might be G-48. Autozone (and Walmart, and Kwik-K mart) probably have G-05 which is also really good, and similar, but not quite the same. If I couldn't find G-48 anywhere I would run G-05.

Why the aversion to the dealer? Just order online if your dealer is far away.
Appreciate 0
      08-15-2012, 06:13 PM   #16
Wires
Captain
9

 
Drives: 335xi
Join Date: Apr 2008
Location: Calgary


Posts: 936
iTrader: (0)

Brown usually means rust. So good time to flush.
Appreciate 0
      08-15-2012, 08:13 PM   #17
Titanium3Series
Second Lieutenant
United_States
3

 
Titanium3Series's Avatar
 
Drives: 2006 330i
Join Date: Feb 2011
Location: Atlanta


Posts: 231
iTrader: (3)

Quote:
Originally Posted by Cisco661 View Post
does the dealer only sell approved coolant or is there some available at like autozone?
none at autozone......only place i have been able to find coolant( other than dealer) for Bmw's is napa....never bought it, but i see it when i go there to buy my lubro moly..
__________________
Appreciate 0
      08-16-2012, 06:18 AM   #18
Cisco661
Cisco661
United_States
13

 
Cisco661's Avatar
 
Drives: 2006 Monaco Blue 330I
Join Date: Jul 2011
Location: California


Posts: 921
iTrader: (17)

Garage List
2006 BMW 330i  [0.00]
thanks guys. yea dealer is nearby. i will just go to them.
__________________
2006 330i/ Monaco Blue/ ZSP/ ZPP/ I Drive/ Burl Walnut Trim/ Steptronic/ Xenon Adaptives/ Logic7/ CF Mirror Caps/ Matte Black Grills
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 09:27 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST