I say use it... you already bought and obviously have made up your mind.

Personally, I would not use it!!!

These trucks are "finicky" and cooling system problems are common.... so if you can't afford to use the proper coolant and or cleaner... maybe you should not have bought a 6.0L PSD truck (just making a statement - not trying to be mean or pick a fight).

Personally, I use only Ford Premium Gold coolant from my local dealer and pay $11.99/gallon. You need 4 gallons (only use 3-1/2). If I can't afford $50.00 in coolant and another $20.00 or so for 17 gallons of distilled water.... then I don't need to be driving a 6.0L Excursion.

By the way, I flush my coolant every 50,000 miles and never worry about checking the nitrate level and this is 1/2 the Ford service interval (which has allowed me to have zero problems).

The choice is yours... and it sounds like you have made it... so good luck.

p.s - If you can afford the Bank's Big Hoss set-up (in your signature) why are you worried about a few extra bucks to do your cooling system properly?