Oil cooler radiator tested good at 80 psi and high pressure tested good at 80 psi. Debating between calling head bad or still try to switch the cooler and hope that it has a micro crack that really opens up at operating temps.
Hello gladiator fam,
Question for yall noticed black residue in the coolant reservoir. Read on forums and first thing first pulled and checked the oil cooler, got the cooler pressure test came back good. Next pulled the high pressure egr, pressure tested came back good. Low pressure egr looks...