Fuel cooler coolant and nitrates...

[rt_hawk]

Is it needed to maintain nitrate levels in the ford yellow or "gold" coolant in the fuel cooler...if so my math says it takes 1oz of DCA4 per ~30-31 oz of yellow coolant (quart-ish) to bring it to within spec (if nitrates are in the 300-800ppm range)...so does this sound right? Can't find a solid answer on this...

Thanks in advance...

Sean

[rt_hawk]

I tested the coolant and it was good, but I also see I have orange coolant in my truck...
I tested that and everything was good except nitrates...came in a little low...can I add fleetguard dca4 to orange coolant? Don't know if it is ford orange or?? Just bought this truck...

[srjd]

either way id get that orange coolant out....unless its red cat but orange get it out

[04hdfatboy]

yea i would get the orange coolant out. It should either be the ford gold or elc red. The nice thing about the cat elc is no nitrates or silicates.

[rt_hawk]

Is there any accurate way to tell if this coolant is red elc?

[04hdfatboy]

Probably not without having it tested by a lab.

[rt_hawk]

Called the dealership, they used prestone universal extended life antifreeze...so I think I am good, besides the fact I need to add some dca4 to bring it into spec....