Head gasket & oil cooler
Head gasket & oil cooler
Broken head gasket...since an ISX with 200 miles is still under warranty, let Cummins fix it.
The Cummins ISX uses red ELC (extended life coolant).
15 gallons
Red ELC.
Red ELC.
Coolant getting into the fuel or oil.
No... But it increases fuel consumption
Drivers side just Behind the Fuel Filter
Coolant sensors can cause a lot of various problems. The ECM relies on the coolant sensor for temperature readings. This is so that it can adjust the timing, fuel, and other related systems. But without knowing more I couldn't say that it is your problem.
On the driver side of the engine behind the fuel filter on the side of the block