Do I need that oil cooler on passenger side of motor ? The previous owner removed it .
This is the first time I noticed that cummins had a oil cooler on the passenger side of the block.
So I'm wondering the pros and cons of running one and not running one
This is the first time I noticed that cummins had a oil cooler on the passenger side of the block.
So I'm wondering the pros and cons of running one and not running one