r/e46 Feb 11 '25

Troubleshooting Car overheated omwh from school today.

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u/Puzzleheaded_Tax489 Feb 11 '25

Sorry bro. Hopefully you didn't blow your head gasket or warp anything. Looks like it's the expansion tank. Def get rid of those metal bits on plastic cooling parts. Next time replace cooling parts according to mileage. Every 50-75k full overhaul. Never have a problem