Runaround
Senior Member
I have a 2018 2500 with the Cummins.
I’m about to flush the old coolant out and replace with new and distilled water.
I can’t find a radiator petcock.
Does this truck not have one!
Also how do you go about getting a 50/50 mixture when there is still water in the block? Should I just add three gallons of concentrate and call it good or should I add 2 gallons of concentrate and one gallon of 50/50 and top it off with the distilled water?
I’m about to flush the old coolant out and replace with new and distilled water.
I can’t find a radiator petcock.
Does this truck not have one!
Also how do you go about getting a 50/50 mixture when there is still water in the block? Should I just add three gallons of concentrate and call it good or should I add 2 gallons of concentrate and one gallon of 50/50 and top it off with the distilled water?