2006 Volvo XC90 • 75,000 miles  Driving on highway (during snow
storm) - suddenly get message "Oil Presure - stop safely".
Within 60 seconds OR less my car went dead on the highway.
Diagnosis has been "Engine seized" by a Dealership and a private
mechanic and engine needs replaced. about $4400.00. THERE WAS
Oil in the Car. I need to know 1) have similar problems been
reported, 2) I can't make next decision until I know what caused
the engine to seize when there was oil in car,, 3) could there
possibly oil compartment failure to pump oil to engine OR a
sensor failure? Much appreciation. Lucy Asked by January 7,
2013. Any mechanic can replace or rebuild an engine but the
really good ones will diagnose the cause of the failure first,
as you're suggesting. The oil pump could have failed. The shaft
or chain that drives the pump could have broken, or a tiny piece
of debris could have lodged in the pressure relief valve. When
the cause isn't known, it's impossible to know whether
rebuilding, repairing, or replacing