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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > Coolant Change Problems



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      11-01-2007, 10:01 AM   #1
sg335
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Coolant Change Problems

Got the oil and brake fluid done. But where is the radiator drain plug? I searched the DIY section but nothing came up. How have you guys changed the coolant fluid?
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      11-01-2007, 10:06 AM   #2
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Good question but to simply add Water Wetter I was planning to use a turkey baster to suck coolant out from the under hood tank. Then replace what I take out with Water Wetter.
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      11-01-2007, 10:21 PM   #3
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That will produce the least amount of temp drop. It would be much better to replace the entire mix with Water Wetter and water with only a small amout of coolant to prevent the heater core from freezing.
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      11-01-2007, 11:38 PM   #4
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there are instructions on this board somewhere but you need to search, i can't remember where i saw it. what i do remember is that the coolant drain plug has something to do with the intercooler, you have to dismount something, i want to say the IC itself, but i'm not sure.
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