Started smelling antifreeze. Losing it towards the back of the engine, leaking onto the exhaust. Too hot to get underneath at the moment.
Heater core? Freeze plug? Head gasket? Other hose at the back of the engine?
It's nothing at the front. Not the radiator or either hose like I hoped it would be.
It's running fine. No noticeable compression loss. 273K miles.
Will check water level when cooled a bit. Overflow still has antifreeze in it.
All input welcomed.