Quote:
Originally Posted by babyduke
Coolant is low on my '05 X5 and the dealer insists that I buy the one that is specifically made for BMW from their parts dept. Are there any quality commercial brand that is suitable so that I don't have to make a special trip to the dealer?
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For topping off, I can't recommend anything but the OEM coolant from BMW dealer, my dealer charge around $22-24 for a gallon.
For complete flushing you can switch to Zerex G05 if you really hates your dealer

, but it price about $20/gallon anyway.
Sometimes if you bought the car new from that dealer they'll just top it off for free, even after waranty is over. Never hurt to call your SA.