E90Post
 


European Auto Source
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Help please - What type of coolant?



Reply
 
Thread Tools Search this Thread
      10-04-2011, 11:12 PM   #1
AlterZgo
First Lieutenant
 
Drives: 2010 BMW 535i 6MT M-Sport
Join Date: Sep 2010
Location: Orange County, CA

Posts: 378
iTrader: (0)

Help please - What type of coolant?

My 335is intermittently gives me a low coolant warning. I checked the manual and it does not indicate what type of coolant the car uses. Does anyone know if a 335 needs a certain type of coolant? Or could I top it off with any regular coolant?

Yes. I know I can just take it to the dealer to have it done for free, but I don't want to hassle with driving there and waiting around if I can just buy some coolant and add it myself. Thanks.
AlterZgo is offline  
0
Reply With Quote
      10-04-2011, 11:16 PM   #2
tibra1
Banned
 
Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

Posts: 6,777
iTrader: (4)

BMW OEM only
tibra1 is offline   No_Country
0
Reply With Quote
      10-04-2011, 11:25 PM   #3
JunkStory
Major
 
Drives: naked.
Join Date: May 2008
Location: 98230

Posts: 1,155
iTrader: (3)

Yes BMW coolant + distilled water only.

Is coolant leaking somewhere? Your car seems brand new, shouldn't have low coolant already. I never had to top off my coolant in 5 years.
JunkStory is offline  
0
Reply With Quote
      10-05-2011, 12:09 AM   #4
Glim
Captain
 
Drives: 2006 330i
Join Date: Jun 2011
Location: Victoria, BC

Posts: 771
iTrader: (0)

Never had to add coolant in six years, the manual says 'have the reason for the coolant loss eliminated as soon as possible.'
Glim is offline   Canada
0
Reply With Quote
      10-05-2011, 12:27 AM   #5
tibra1
Banned
 
Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

Posts: 6,777
iTrader: (4)

Quote:
Originally Posted by Glim View Post
Never had to add coolant in six years, the manual says 'have the reason for the coolant loss eliminated as soon as possible.'
+1..u should not be losing coolant intermitently for any reason.
tibra1 is offline   No_Country
0
Reply With Quote
      10-05-2011, 08:38 AM   #6
Socom
Major General
 
Drives: 2010 335D
Join Date: May 2005
Location: Atl.

Posts: 5,118
iTrader: (0)

Quote:
Originally Posted by JunkStory View Post
Yes BMW coolant + distilled water only.

Is coolant leaking somewhere? Your car seems brand new, shouldn't have low coolant already. I never had to top off my coolant in 5 years.
+1 oem is cheap.
Socom is offline  
0
Reply With Quote
      10-05-2011, 08:46 AM   #7
ceb
NHTSA Nazi
 
Drives: 335ix
Join Date: Aug 2009
Location: MD

Posts: 1,976
iTrader: (1)

While coolant loss is bad, there is generally no reason to freak this time of year.

Unless you absolutely, positively , without question know that your coolant was filled to the right amount previously and none evaporated, then your coolsnt "loss" is probably due to temperature variations.

Go to the drug store and buy a jug of distilled water. Add a cup full or so to your resevoir and you'll be fine. The extra water will not affect your coolant/water ratio to any extent.

If, after that, you get another low coolant warning then you may have a problem.
ceb is offline  
0
Reply With Quote
      10-05-2011, 02:11 PM   #8
AlterZgo
First Lieutenant
 
Drives: 2010 BMW 535i 6MT M-Sport
Join Date: Sep 2010
Location: Orange County, CA

Posts: 378
iTrader: (0)

Thanks everyone. I figured it may have something to do with the seasonal change in temperatures. No leaking fluids in the driveway or engine compartment, radiator, etc. and, although I've had my car for about a year, it only has about 5,600 miles. I'll try the distilled water and see what happens.
AlterZgo is offline  
0
Reply With Quote
      10-05-2011, 03:23 PM   #9
samchoi604
Colonel
 
Drives: black on black
Join Date: Mar 2009
Location: Burnaby, BC

Posts: 2,315
iTrader: (3)

Quote:
Originally Posted by ceb View Post
While coolant loss is bad, there is generally no reason to freak this time of year.

Unless you absolutely, positively , without question know that your coolant was filled to the right amount previously and none evaporated, then your coolsnt "loss" is probably due to temperature variations.
Please explain how temperature variation would cause a disappearance of 1+ quart of coolant in a closed system. Really, I'm interested.
samchoi604 is offline  
0
Reply With Quote
      10-05-2011, 03:25 PM   #10
samchoi604
Colonel
 
Drives: black on black
Join Date: Mar 2009
Location: Burnaby, BC

Posts: 2,315
iTrader: (3)

Quote:
Originally Posted by AlterZgo View Post
Thanks everyone. I figured it may have something to do with the seasonal change in temperatures. No leaking fluids in the driveway or engine compartment, radiator, etc. and, although I've had my car for about a year, it only has about 5,600 miles. I'll try the distilled water and see what happens.
Temperature here varies from 10F to 90F and my coolant level never changed. If you are sure there's no leaking, then you could have a bad sensor or blocked radiator. Low coolant is not normal under any circumstances.
samchoi604 is offline  
0
Reply With Quote
      10-05-2011, 03:30 PM   #11
tibra1
Banned
 
Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

Posts: 6,777
iTrader: (4)

Quote:
Originally Posted by samchoi604 View Post
Please explain how temperature variation would cause a disappearance of 1+ quart of coolant in a closed system. Really, I'm interested.
I happend on this too but really didnt want to dig into it..coolant will not be lost at this rate unless there is an issue
tibra1 is offline   No_Country
0
Reply With Quote
      10-05-2011, 09:32 PM   #12
ceb
NHTSA Nazi
 
Drives: 335ix
Join Date: Aug 2009
Location: MD

Posts: 1,976
iTrader: (1)

Quote:
Originally Posted by samchoi604 View Post
Please explain how temperature variation would cause a disappearance of 1+ quart of coolant in a closed system. Really, I'm interested.
Who said one quart? I suspect the dealer never topped it off properly, a bit evaporated (from the expansion tank) and a drop in trmps was just enough to trigger the intermittent warning.

It could be something serious but given the timing it may well be nothing.
ceb is offline  
0
Reply With Quote
      10-05-2011, 09:38 PM   #13
mike3000fl
Eleven Bravo
 
mike3000fl's Avatar
 
Drives: 06 330i
Join Date: Feb 2010
Location: ft bragg

Posts: 2,143
iTrader: (0)

our expansion tanks are under pressure (while hot), it is a completely closed system, not like the expansion tanks on other cars that have a spring loaded radiator cap feeding them.

on many cars you can open the expansion tank while the car is hot. on ours you cant. it is under pressure. completely closed system, nowhere for coolant to evaporate from.
__________________
2006 330i - Jet Black - 19" E46 M3 wheels - HR Sport - 188,000 Miles...

mike3000fl is offline  
0
Reply With Quote
      10-05-2011, 09:52 PM   #14
samchoi604
Colonel
 
Drives: black on black
Join Date: Mar 2009
Location: Burnaby, BC

Posts: 2,315
iTrader: (3)

Quote:
Originally Posted by ceb View Post
Who said one quart? I suspect the dealer never topped it off properly, a bit evaporated (from the expansion tank) and a drop in trmps was just enough to trigger the intermittent warning.

It could be something serious but given the timing it may well be nothing.
From what I read it takes at least a missing quart to trigger the sensor to send the low coolant warning. Some people got the low coolant light and then topped off with more than 1 quart. Besides, temperature shouldn't be that low in CA right now and his car is brand new, dealer shouldn't have touched the coolant.

Like mike3000fl said, there's no radiator cap. Coolant cannot evaporate. Likely there's a leak, blocked radiator, bad sensor, or worst case scenario: getting into the oil through the exchange.

Last edited by samchoi604; 10-05-2011 at 10:06 PM.
samchoi604 is offline  
0
Reply With Quote
      10-05-2011, 10:06 PM   #15
ceb
NHTSA Nazi
 
Drives: 335ix
Join Date: Aug 2009
Location: MD

Posts: 1,976
iTrader: (1)

Quote:
Originally Posted by samchoi604 View Post
From what I read it takes at least a missing quart to trigger the sensor to send the low coolant warning. Some people got the low coolant light and then topped off with more than 1 quart. Besides, temperature shouldn't be that low in CA right now. Telling OP that receiving intermittent low coolant warning "is nothing" could be the worst advice to give.



Exactly. Anyone who's opened the hood will immediately see there's no radiator cap!
The OP is getting an intermittent warning which would mean that the level isn't that low.

If he knew that the coolant level was correct when he bought the car, then there is no way to know how much he "lost."

Going to the dealer at this stage will get him a top-off and - maybe - a quick once over.

He can, and should, do what he thinks best, but I'd just add a bit of water and watch it.

I'd caution folks here from going overboard and expecting the worst all the time. You are also a bit naive if you believe that our coolant can't evaporate.
ceb is offline  
0
Reply With Quote
      10-06-2011, 05:21 AM   #16
ENINTY
Banned
 
Drives: 2006 325i Sport
Join Date: Jun 2006
Location: Virginia

Posts: 3,415
iTrader: (0)

Quote:
Originally Posted by samchoi604 View Post
From what I read it takes at least a missing quart to trigger the sensor to send the low coolant warning. Some people got the low coolant light and then topped off with more than 1 quart. Besides, temperature shouldn't be that low in CA right now and his car is brand new, dealer shouldn't have touched the coolant.

Like mike3000fl said, there's no radiator cap. Coolant cannot evaporate. Likely there's a leak, blocked radiator, bad sensor, or worst case scenario: getting into the oil through the exchange.
There is a radiator cap. It works just like any other radiator cap. The coolent reservoir is not an "expansion" tank; it is a reservoir to hold the cooling system coolant. Wait until your car overheats and you will understand that the radiator cap works as a pressure relief valve. It can allow coolant to evaporate.
ENINTY is offline  
0
Reply With Quote
      11-07-2012, 08:35 AM   #17
akuliest
Private First Class
 
akuliest's Avatar
 
Drives: 335i Black, Coral red interior
Join Date: Apr 2011
Location: NOVA

Posts: 141
iTrader: (2)

I just added coolant to my car, just picked some up from the drug store. It was an antifreeze/coolant mixture...did I just screw up my cooling system???
__________________
Black saphire 335i coupe, coral red interior, BMW performance kidney grill, 6 speed manual, UR catted downpipe, 30% all around tints, 19in staggered ST1s, more mods to come!!

akuliest is offline  
0
Reply With Quote
      11-07-2012, 12:18 PM   #18
Socom
Major General
 
Drives: 2010 335D
Join Date: May 2005
Location: Atl.

Posts: 5,118
iTrader: (0)

Quote:
Originally Posted by akuliest View Post
I just added coolant to my car, just picked some up from the drug store. It was an antifreeze/coolant mixture...did I just screw up my cooling system???
You're joking about the type of coolant right?
Socom is offline  
0
Reply With Quote
      03-05-2013, 11:05 AM   #19
bimmerJP
First Lieutenant
 
bimmerJP's Avatar
 
Drives: 2008 e90 335i
Join Date: Jun 2011
Location: Texas, the United States of America, Planet Earth, Universe

Posts: 372
iTrader: (0)

Garage List
2008 BMW 335i  [2.50]
Wait, BMW OEM only? Why is that? What is so special about OEM coolant?
bimmerJP is offline   United_States
0
Reply With Quote
      03-05-2013, 01:23 PM   #20
cisach
Second Lieutenant
 
cisach's Avatar
 
Drives: 2007 335i Coupe BSM/CR
Join Date: Nov 2009
Location: Jax

Posts: 218
iTrader: (2)

Garage List
2007 335i Coupe  [0.00]
OEM coolant is alcohol based I believe and it's noy the same as any ol' collant found at auto stores.

I remember seeing a write up where two different types of coolants were mixed it the mixture had strings of "gummed up substance" simlar to jello.
cisach is offline  
0
Reply With Quote
      03-05-2013, 03:41 PM   #21
Chriztofor
Colonel
 
Chriztofor's Avatar
 
Drives: '06 325i Auto
Join Date: Feb 2010
Location: Chicago Burbs

Posts: 2,622
iTrader: (1)

I have been using Peak long life for years on my e46 and e90. It is silicate and phosphate free. No gum-ups, no problems, 98,000 miles, original water pump. http://images.peakauto.com/long_life_5050_specs.pdf
__________________
If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
Chriztofor is offline   United_States
0
Reply With Quote
      03-05-2013, 07:02 PM   #22
Socom
Major General
 
Drives: 2010 335D
Join Date: May 2005
Location: Atl.

Posts: 5,118
iTrader: (0)

Quote:
Originally Posted by Chriztofor View Post
I have been using Peak long life for years on my e46 and e90. It is silicate and phosphate free. No gum-ups, no problems, 98,000 miles, original water pump. http://images.peakauto.com/long_life_5050_specs.pdf
Of course you wouldn't top off with anything you had handy. As you kmow Mixing coolants can be bad if you don't know what you're doing.
Socom is offline  
0
Reply With Quote
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 06:19 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