If you are at 65 000 miles, I'd just replace the pump as preventative maintenance. What's the mileage on your X? Coolant exchange is also something to consider.

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E46 330i (Sold)
E90 328i (Sold)
E90 325i (Sold)
E90 328i Xdrive (Sold)
2009 VW Touareg 4.2 Highline