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      03-30-2013, 05:11 PM   #3
RyanBMW
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Drives: 2011 F10 550i
Join Date: Dec 2011
Location: Plano, TX

Posts: 52
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I changed mine at 55K miles..it was a piece of cake! You just need 1 gallon of coolant from BMW, you can mix it with up to 2 gallons of distill water (yes, I mixed mine 35% coolant & 65% distill water) works fine, or you can mix it 50/50, not a big deal, l prefer mine with that ratio. Good luck!!
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