Diesel JD
Full Access Member
Ah the diesel coolant additive test strips. The fleetguard DCA4, ford FW-16 and VC-8 diesel coolant additives as well as the stuff in the Caterpillar diesel ELC and compatible stuff such as Rotella and Texaco ELC are nitrite and molydbate. The DCA2 was in NapaKool and WixCool and in the non ELC additives for the old CAT convetional coolant. The NapaKool strips will tell you something if you run DCA4 but not the correct or whole story. You might could be pretty safe in assuming that if you have nitrite and the coolant pH is in the range that the molydbate was there too. The correct way is to use DCA4 strips. By the way, I'm back to needing these as I used conventional green coolant when I had my engine push out the freeze plug in December. I don't want to just add DCA because I know there is a trace of the CAT ELC which is fully charged with that stuff left in there and since it's a 6.9 I'm not TOO worried about it but in my opinion this really needs to be addressed on any diesel. So anyone know where I can buy just one or a couple strips? Does Ford have them? Part #?