Quote:
Originally Posted by smass
Good to know about the B58 OFH. I finally found my seepage. It the fitting on the OFH for the hose that goes up to the electric pump. I may just change the O ring as I think I can reach it from underneath. I also have a seeping water pump, $500+ and only available from BMW......
If this were my daughter's car I would change 100% of the cooling system right now. $3k+ in parts alone! We live in AZ so this is a safety issue. But since it is mine, I carry water around and can limp it home in most situations.
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For B48 owners when the OFH goes it can go really fast with little or no warning. What you think might think is a slow leak from O-rings leaking will turn into a pull over right now and shut her down event.
My daughter said her low coolant level warning came on at a stop light, and almost immediately upon driving forward she got an engine overheating warning.
Thankfully I taught her well, she pulled over immediately, so no turbo damage. The coolant hemorrhaged out fast from the low side, she called me, I was pretty sure what it was, I got there confirmed it the low side was almost completely drained, and called a flatbed tow truck. There was no limping home on this one.
I was angry at myself because I knew the problem with the B48's thermoplastic OFH, and was planning to change hers out preemptively, but put it off. Like I said B48 owners really need to do this before theirs fail. Hers failed at just over 70k miles, but some have bit the dust as early as 30k-40k miles.