I am in the process trying to decide what type of coolant to put in my Cummins ISC. I currant have the ES compleat Glycol Extended Service I know how to flush if going back to the same type of coolan...
Moisheh, Just curious as to what OAT did you switch to? Do have a CAT or Cummins? My local Cummins dealer has the CAT coolant EC-1 (ELC) that is shown in this chart: