Thanks to recommendations from this board, I recently changed over to M1 15w50 in a 505 CID hydraulic roller Pontiac engine. Have not driven the car yet.
What is a safe cold start temp for this oil? I have a magnetic pan heater, how cold would it have to be to bother with the oil pan heater?
What is a safe cold start temp for this oil? I have a magnetic pan heater, how cold would it have to be to bother with the oil pan heater?