Engine Running Hot

[Rawze]

(07-03-2016 )Hammerhead Wrote:  

(06-26-2016 )in2trux Wrote:  Don't forget about the internal part. I spent yesterday doing a flush with Cummins Restore and replacing coolant with Fleetguard ES Complete.
The flush is an alkaline additive to tap water, dive it around for 60-90 minutes, flush with tap water a few more times, drain and fill with new coolant repalce filter.
Did a nice job cleaning some minor oil residue from inframe out of the surge tank.

Hey in2, how many times did you "rinse" with straight tap water? The instructions only say once, I did mine 3 times and had a little foaming from the cleaner on the third time. Going to put coolant back in it now.
I don't know about you, but I sure had a hard time dropping operating temperature Restore/water and then refilling shortly with tap water. That seems like way to much of a temperature difference to me! I've only got a small hot water tank here at the shop, so I warmed as much as I could but it didn't like doing that.

Your concerns are legitimate,.. It is not a good idea to take several gallons of cold tap water and dump into a hot engine. That is how head gaskets get leaky.

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when I flushed mine,.. I used a garden hose and let it run for about an hour with all drain ports open and the bleeder at the top of the thermostat going into the drain as well.