+- Rawze.com: Rawze's ISX Technical Discussion and more (http://rawze.com/forums)
+-- Forum: Big Truck Technical Discussion... (/forumdisplay.php?fid=1)
+--- Forum: Ask Your question... (/forumdisplay.php?fid=45)
+--- Thread: BLACK RESIDUE IN COOLANT RESERVOIR (/showthread.php?tid=5597)
Pages: 1 2
RE: BLACK RESIDUE IN COOLANT RESERVOIR - Rawze - 12-21-2019
Not sure about detroit, but in the ISX, the most common cause is the oil cooler. Is seeps just enough to make a black sooty type buildup in the resivior tank if the oil is normally black / full of soot.
What color is your oil?. Usually, the only time oil cooler will only make it be brown-ish in color is if the oil is not getting blackened.