Quote:
Originally Posted by 123Britt
On a E90 I had the tank split at 125K miles. So at 70K on the M235i I had the tank removed to gain access to Turbo Inlet duct (and WP/Thermo R&R) and realized just how yellow and full of crud the tank was & ordered a new replacement. I want to say $125 from ECS. Plus I was following the "Wrench Lab" Mega-build and he replaced his due to the same issue.
Surprised at how much better the engine bay looks with that new tank and new blue fluid after the WP/Thermo replacement.
Not sure that the tank typically fails at 85K miles but if you plan on keeping the car long term -- all the plastic parts on the turbo side of the car are prone to heat failure and it is a good idea to R&R.
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funny tho...mine is opposite turbo!