They're not bomb-proof, but they are pretty strong. The question is whether there's any internal damage to the motor as a result of the oil pump not feeding the motor the right oil pressure.
I'm trying to remember where the oil pump is on the 5-banger. I think it's somewhere like on the end of the motor, where the cambelt etc is, so you could well be in to a full cambelt and diesel timing belt change to replace the oil pump.
Proceed with extreme caution.