Quote:
Originally Posted by Wayne's World
A radiator drain and flush is probably a sufficient percentage change. Although most of the coolant is actually in the block.
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Thank you for the information. I went ahead and changed it on Tuesday. I noticed that only 1 gallon was in the radiator. I started the car and ran the heater. I managed to get another gallon out. I decided that was good enough. I mixed it 50/50 like the BMW anti-freeze stated but the dealership sold me 3 gallons which is the entire system. Should I have put in 100% pure? I now have two extra gallons.