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BMW OEM stuff or just good old blue stuff from Walmart or pretty much anywhere works fine. None of that rain x stuff though. That stuff has never played nice with any BMW that me or my family has had.
I keep a little thing of BMW concentrate but they always top me off when I go in for service, so I never really have had to refill on my own.
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2020 X3 M40i
2015 328i - Sold @ 104,000 miles
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