I own a 2007 BMW 750Li I have a small leak on the top of the coolant reservoir area. Can I use a sealant? What type would you reccamend?

Asked by Dec 22, 2014 at 03:20 PM about the 2007 BMW 7 Series 750Li

Question type: Maintenance & Repair

2 Answers

232,735

Nope, time to replace it, those expansion tanks have very tiny cracks that are not repairable since it is under pressure. Look at replacing other components of your coolant system as well.

232,735

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