400 ISL Transmission fluid in Coolant?
Hi, We have a 04 Dynasty with a 400 ISL, side radiator and 6 speed transmission, just passed 48k miles. Had the unit in for service and pink fluid was discovered in coolant tank which was transmis...
Forum Discussion
I don't have your coach, but in my coach and all diesels with side radiators, the transmission cooler and engine radiator are separate. In cars, the transmission fluid is cooled on the bottom of the engine radiator, so the fluids can mix if there is a leak. No so with separate radiators. Bottom line is I have no idea how your engine coolant was contaminated. Could someone have added the wrong coolant to your engine? The different Cummins coolants are color coded and can't be mixed.
