Quote:
Originally Posted by MHKitchen
Just found that my 2nd replacement coolant overflow line grew brittle and disintegrated. You'd think BMW would figure out how to make this out of a material that's up to the job and BMW's reputation? Fed up with the OEM parts turning to dust, I came up with a simple replacement. Just went to the hardware store and bough some copper tubing. Used the existing rubber ends to secure it with hose clamps, and voila!, Problem solved! No more broken lines and leaking coolant!
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9 years and over 150 k miles on the OE tube here with no issues except for having to replace the waterpump, expansion tank and upper radiator hose. Using BMW coolant and distilled water, replacing every 2 years.
If you're using non-approved coolant and/or tapwater, you could be causing the issue. Don't believe Danica P, when you Peak, you lose!