What is a good coolant

[in2trux]

Red 50/50 premix and test ph twice a year, never had any problem with cavitation.
Fleetpride sells Prima guard by the case

I flushed with Cummins Restore and went with the Fleetguard ES Blue extended life after all coolant loss problems were solved. $11/gl by the case. Non SCA filter every 30k miles.

Best bet is something you can pick up at any truck stop and is compatible if you have any problems on the road like a blown hose or leaking EGR cooler.