I have a 2007 bmw 335i. I replaced the coolant expansion tank like 2 months ago because it was leaking. About a month later the low coolant level came on again and I saw the expansion tank was leaking from the same place it was leaking the 1st time. I went ahead and got another one since I had warranty. Bout 3 weeks later it happened again. This is going to be my third coolant expansion tank in 3 months.
What makes this problem better or worse?
Is getting worst to the point where the higher temperature light is starting to come out
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( Combustion leak would *over pressurize* the “coolant expansion tank†)