Woke up to a small puddle/mark of coolant, on the driver side headlight.
Got to investigating.
Front cover had a good bit on it. Some on the serpentine. Shit.
Took the fan out. Thermostat is wet at its seals. Behind it, the pump, the weep hole. All bone dry. I start it after cleaning off the wet.
It appeared to get wet at the T stat seal again. But the. It all evaporated.
Nothing from the weep hole. I poke a cotton swap on it. Dry. No residue, nothing.

So it appears my thermostat o ring has failed. I don't know how rare that failure is, but I'm waiting to see if my guy can order the logic7 95c thermostat, before I snag one off eBay.



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Black on cream 04 4.8iS
Black on black 330i ZHP auto
Imola on black 01 M3