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      05-29-2022, 04:13 PM   #44
vanmpower
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Drives: 2018 M5
Join Date: May 2018
Location: Vancouver BC

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Over almost four years of ownership. I've topped up a good half-dozen times AND have had the system pressure-tested at the dealership twice. I just added ~750ml of water today. I'm calling the dealer again tomorrow. I have a LOT of residue around the cap (and below).

I will ask about the recall mentioned in this thread but notwithstanding, i feel the main reservoir cap is simply way too loose. I feel it could be much tighter before that "click" in which the arrows align.

I'll report back once the dealer checks things out...my warranty is gone in a month, hard to believe I've had the car for 4 (awesome) years.
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