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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Which brake fliud to use? BMW or other?



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      04-09-2012, 12:01 PM   #1
bmodzelewski
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Which brake fliud to use? BMW or other?

Its time for my 2 yr brake fluid flush and this is the first time I will be doing it myself since the car is no longer under warranty/maintenance.

The car is a daily driver. Regular stop and go during rush hour traffic on the interstate. Never on the track.

My question is... Should I use the standard BMW brake fluid or should I switch to another brand for better protection? Or would that not be necessary?

Any input on this would be great. Thanks.
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      04-09-2012, 09:03 PM   #2
ENINTY
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All modern BMWs use DOT-4 brake fluid. Sometimes it is hard to find, or you will only find DOT-3/DOT-4 synthetic. I bought some Pentosin (German) brand DOT-4 ("Super 4) at an auto parts store that caters to foreign cars. I paid $16 for a 1L can and a 1/2L can.

A lot of people also use ATE brand either ATE super-blue or ATE200 (gold colored).
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      04-10-2012, 10:46 AM   #3
bmodzelewski
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thanks. I was looking the ecs tuning website and found both of the ate fluids you mentioned.

http://www.ecstuning.com/BMW-E92-335...Braking/Fluid/

are there any major differences between the 2 fluids? also does anyone have any comments about the ATE SL6?

Would 1L be enough to flush the entire brake system?
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      04-10-2012, 10:48 AM   #4
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Nothing wrong with OEM.
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      04-10-2012, 11:15 AM   #5
bmodzelewski
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Thanks. I guess that was really my main question... is there any real reason for me to switch from OEM brake fluid? especially under my normal driving conditions. Would I have any noticeable advantages of an aftermarket fluid?
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      04-10-2012, 03:00 PM   #6
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There will be no advantage to ANY DOT 4 over another in a daily driving situation. I've used Valvoline DOT3/DOT4 for about a decade in many BMWs. Easy to find (AutoZone) and cheap.

1 liter/quart should be enough if you're not wasteful. Wouldn't hurt to buy two and have extra around for top-off or next time around.

Last edited by CirrusSR22; 04-10-2012 at 03:05 PM..
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      04-10-2012, 03:29 PM   #7
ENINTY
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Quote:
Originally Posted by CirrusSR22 View Post
There will be no advantage to ANY DOT 4 over another in a daily driving situation. I've used Valvoline DOT3/DOT4 for about a decade in many BMWs. Easy to find (AutoZone) and cheap.

1 liter/quart should be enough if you're not wasteful. Wouldn't hurt to buy two and have extra around for top-off or next time around.
Agree with this too. I have Valvoline in my E90 and Z3 right now. I just wanted to switch to something new. I figured Pentosin is the OEM power steering oil, so their brake fluid should be suitable for the brake system. The price wasn't bad either.

I believe BMW's OEM is Castrol LMA. I was told that by a parts guy at Tischer BMW many years ago and used it in my E30 for a long time.
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      04-10-2012, 03:52 PM   #8
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Quote:
Originally Posted by bmodzelewski View Post
Thanks. I guess that was really my main question... is there any real reason for me to switch from OEM brake fluid? especially under my normal driving conditions. Would I have any noticeable advantages of an aftermarket fluid?
Under normal driving conditions we suggest staying with the genuine BMW fluid (found HERE).

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      04-10-2012, 03:56 PM   #9
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Quote:
Originally Posted by ENINTY View Post
All modern BMWs use DOT-4 brake fluid. Sometimes it is hard to find, or you will only find DOT-3/DOT-4 synthetic. I bought some Pentosin (German) brand DOT-4 ("Super 4) at an auto parts store that caters to foreign cars. I paid $16 for a 1L can and a 1/2L can.

A lot of people also use ATE brand either ATE super-blue or ATE200 (gold colored).
+1 on ATE, alternating between blue and yellow makes flushes a bit easier. But ATE's price is pretty good for a high temp fluid, but nothing wrong with OEM for daily/street driving.
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      04-12-2012, 11:28 AM   #10
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I use ate super blue and have used super blue in my e90, e46, and 3 of my bikes I have had.

I have had good experience with ate fluid, mainly I like it cause it is blue.
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