Thread: can i mix the Blue with Yellow anti-freeze?
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Old 01-08-2009, 04:33 PM
HarryM HarryM is offline
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Join Date: Jan 2001
Location: Los Angeles CA
Posts: 140
My wife's 2000 C230K came new with blue antifreeze. For the first two coolant changes I used BMW (blue) antifreeze, then switched to Mercedes antifreeze the third time.

Other than color, BMW and Mercedes antifreeze may well be chemically identical.
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