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Old 10-14-2002, 05:38 PM
suginami suginami is offline
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Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
I've read that it's a bad idea to mix coolant.

MB's coolant is unique in that it has a ph of 7, or neutral. All other coolant is not.

Using the other coolant is bad on the water pump, seals, plastic, and rubber parts.

I'd drain, flush, and refill.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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