Another coolant question?

Snomas wrote:
I had a heater hose breakdown on I-10. The hose was changed out and 8 gals of a Chevron Extended life coolant was added on top of my Cummins Fleetguard Extended life coolant (system holds 11gals total). Should I have the system flushed and replace w/all new Fleetguard coolant or is the mix I have now OK?

I believe that you will find that the specification for almost any coolant is that you should not exceed a 50/50 mix of coolant and water. If your system holds a total of 11 gallons as you said and you added eight gallons of pure coolant, you are way off with your mixture with far too much coolant. While having a mixture of coolant greater than 50% will give added protection to freezing (far beyond what you would need), it will significantly reduce the cooling system efficiency.

Safe travels.