As simple of a question as it sounds, this one has me stumped.
I'm currently rebuilding my E36 M50 motor out of my '94 325i. I picked up two gallons of coolant to refill the system with. (I already had half a gallon at home)
Here's where it gets weird: All three of these coolant containers are Zerex G48 50/50 coolant. All three containers appear to be the same. And yet, one of these three containers has green coolant instead of blue. I can't find any difference on the bottles between the green and blue.
If both of these containers are supposedly the exact same stuff then why is one green and the other blue? What's the difference? I know you typically can't mix coolant but can you mix these if they're the same stuff? I have more blue than green, but when I started refilling the system I used the green first. (I didn't even realize they were different colors until my coolant came out of the bottle green, to my surprise.) If I want to use blue instead do I need to do a full flush to clean out the half gallon of green I've put in so far?
Contact Zerex via the company’s customer service phone number. Are the Zerex part numbers on the containers the same?
G48 is fine. Color makes no difference. I’d buy blue just so anyone who works on the car knows it’s different from nurnsl green. Zerex GO5 is also fine to use in BMWs.
We have G48 at our shop, for BMW's and MB's. It is blue, every time. Even the label is blue. If I found green coolant in a G48 bottle, I would return it.
Chris Powell
Racer and Instructor since, well. decades, ok?
Master Auto Tech, owner of German Motors of Aberdeen
BMWCCA 274412
German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471
yeah - very strange. is the UPC/barcode/part number the same on all the bottles here?
'95 325iS - auto to manual swap done!
Current:
2001 S54 M-Coupe
2011 Mini Cooper Countryman S
94 Grand Cherokee Laredo 4.0L/242 TC (Daily)
Past:
95 325i Convertible/Boston Green
01 330Ci Convertible/Steel Grey/Stick
05 Infiniti G35 Premium/Tech
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