not sure but I do know it was bought at Carquest, not the dealer. Only thing I can think of is the gear spun. Truck still starts, just misfires bigtime as i was told so I'm suspecting possibly low oil pressure because the gear is still on fairly tight. Cant' think of any other reason why i would have both ruff running and low oil pressure. Hopefully it is just low oil pressure and not zero, just low enough to turn the check gauge light on.
I won't be able to go look at it till tomorrow.
Why do you ask about Dormin ?? Thanks