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This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-10-2016, 06:56 PM   #1
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Bmw Coolant

Hey guys im new to e46s and i understand one of the first things to do is replace your old cooling system . But does the coolant really have to be the bmw coolant or can it be a regular one that is compatible with all year, all vehicle types ? Thanks in advance!
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Old 06-10-2016, 07:02 PM   #2
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It has to be bmw blue.
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Old 06-10-2016, 07:04 PM   #3
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The BMW coolant is just as easy to get as anything else. Unless you're just being cheap. If you have to pinch pennies, owning a BMW is poor judgement. Just get the correct coolant.
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Old 06-10-2016, 07:27 PM   #4
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zerex g-05
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Old 06-10-2016, 08:10 PM   #5
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Buy two gallons of BMW coolant from the dealer and mix 50/50 with DISTILLED water $1/gallon. Make sure you bleed the system there are lots of info on how to do it.
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Old 06-10-2016, 08:39 PM   #6
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While at the dealer, see if you can get yourself an empty coolant bottle with cap -- it makes mixing much easier.
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Old 06-11-2016, 06:34 AM   #7
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Bmw Coolant

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Buy two gallons of BMW coolant from the dealer and mix 50/50 with DISTILLED water $1/gallon. Make sure you bleed the system there are lots of info on how to do it.

A single gallon of BMW coolant is all you need. Mix it with DISTILLED WATER at a 50/50 ratio. The cooling system holds a little less than 2 gallons of coolant. As you're in SoCal, you can top it off with distilled water.

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Old 06-11-2016, 07:42 AM   #8
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A single gallon of BMW coolant is all you need. Mix it with DISTILLED WATER at a 50/50 ratio. The cooling system holds a little less than 2 gallons of coolant. As you're in SoCal, you can top it off with distilled water.
My point is while you are there get two so you can have extra mix on hand if you ever need it.
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Old 06-11-2016, 07:46 AM   #9
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My point is while you are there get two so you can have extra mix on hand if you ever need it.
+1 bleeding the system spills coolant. 2 gallons is a safe bet.
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Old 06-11-2016, 09:27 AM   #10
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OE BMW, Xerex G-05 and OE Mercedes coolant are all acceptable options. If for whatever reason you have the latter 2 lying around, they are safe to use. However, if you are buying coolant anyway, there really is no reason to deviate from OE BMW on this one.
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Old 06-11-2016, 10:21 AM   #11
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Thank all of you , its not soo much the price ijust live across the street from a autozone and i didnt want to go some far ways to the dealer, but thank all pf you, will be posting again soon***55357;***56911;***55356;***57341;
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Old 06-11-2016, 12:47 PM   #12
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Pep Boys carries Zerex. Zerex G-05 is the equivalent to the blue BMW Coolant. The blue coolant is actually made by Zerex pretty sure its the same stuff. Just not gonna be as pretty when your radiator leaks.
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Old 06-11-2016, 08:12 PM   #13
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Zerex G-05 is the equivalent to the blue BMW Coolant. The blue coolant is actually made by Zerex pretty sure its the same stuff.
Where's the document that proves this. Not arguing I would actually like to know.
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Old 06-11-2016, 09:55 PM   #14
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A lot of misinformation out here.

People generally believe what they read and don't do any fact checking, especially on an established forum like this.

This is why people shouldn't just regurgitate information without knowing what they're talking about for sure.

Here are two spec sheets on valvoline coolants:
http://content.valvoline.com/pdf/Zer...l_Bulletin.pdf
http://content.valvoline.com/pdf/zerex_g48.pdf

It seems that Zerex G 48 IS BMW approved,
and Zerex G 05 IS NOT BMW approved.
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Old 06-11-2016, 10:12 PM   #15
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My BMW coolant is green...
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Old 06-12-2016, 12:21 AM   #16
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Zerex G-05 (Glysantin G-05) is very similar--though not the same--to BMW OE coolant (Glysantin G-48) and I really wouldn't hesitate to use it. Volvo blue and Mercedes blue are the same as BMW blue. You can also use Pentosin NF, which is also basically the same thing, but more expensive. All G-?? coolants are made by (or specified formulas from) Glysantin/BASF.

Japanese blue coolant, on the other hand, is completely different.

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Old 06-12-2016, 07:48 AM   #17
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For those who use Zerex G-05, Advance Auto Parts and Carquest have a $2.00 off sale through June 30. Picked up a couple gallons yesterday.
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Old 06-14-2016, 01:16 PM   #18
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Coolant Zerex....

Hey guys another question about coolant. Soo i have 2gallons of bmw coolant, and 2 of Zerex g05. But iwas wondering do either or both of them have to be mixed with water or are either of them ready to go as is ??? Ps i am not using both together, just wondering for next time ,Please help, thanks !
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Old 06-14-2016, 01:17 PM   #19
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The BMW coolant must be diluted 50/50. Unless the bottle says 50/50 prediluted on it, it's not. And don't put that Zerex crap in your E46.
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Old 06-14-2016, 01:54 PM   #20
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Originally Posted by 06.325ci View Post
Hey guys another question about coolant. Soo i have 2gallons of bmw coolant, and 2 of Zerex g05. But iwas wondering do either or both of them have to be mixed with water or are either of them ready to go as is ??? Ps i am not using both together, just wondering for next time ,Please help, thanks !
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The BMW coolant must be diluted 50/50. Unless the bottle says 50/50 prediluted on it, it's not. And don't put that Zerex crap in your E46.
I was under the impression Xerex G-05 is OEM or damn close to it.
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