What coolent

[ButtNuttN8]

So my FICM crapped out and in the process of taking it out i removed the coolent over flow bottle. I lost a lot of coolent and my question is what coolent should I use to replace it with. I know with the 6.0 you gotta keep em cool with the oil coolers and what not

thanks

[colo_dually]

If you don't want to drain and flush your system completely out (and risk clogging your oil cooler), you are going to want to run whatever was in the truck to begin with (Stock is Ford Gold, and its the cause of the oil coolers going bad).

If you are looking to do a flush, I advise any silicate-free extended life coolant bearing CATs EC-1 rating or equivalent. There is a lot that goes into flushing these trucks as not to cause issues, do you have a monitor on the truck now and do you know your ECT/EOT deltas?

[ButtNuttN8]

I have an edge juice with attitude. (i know i want to swap it out for SCT) but it does monitor EGT temp of truck boost but i dont think it does oil tempture Im thinkin about getiing the scangauge 2 system real soon. Trucks been down for a week and possible a week more whenever i get the FICM back diesel shop wanted $580 to put another FCIM but i did some research on this site and its getitng sent to FICM repair and putting an atlas 80 tune on it

[Deer Creek]

ButtNuttN8: Yeah I just sent mine to FICM Repair myself.

colo_dually: What all is needed to flush the coolant system? Not trying to hyjack this thread (ButtNuttN8) but I just did the exact same thing and took the degas bottle completely out also. Is the coolant system flush something I can do here at the farm?

[colo_dually]

There are a couple of ways to do the flush, and the first thing you need to know is the health of the oil cooler (via the ECT/EOT deltas). If you just rebuilt the oil cooler, and you flush the system there is a good chance you will clog that new cooler.

For example: My truck went in for HG's, per Fords procedures the flush is conducted after a new oil cooler is installed during that work. Reason, worse case of oil cooler failure is a rupture of the oil cooler into the coolant system itself. Results: My truck left the dealer with a fresh oil cooler and 8* deltas. (Ford paid labor, so it was done their way, on this job)

I recommend making that coolant flush part of a preventive oil cooler rebuild. That is when you are ready to rebuild/replace your OEM oil cooler and have your EGR solution in hand (delete, block, or upgrade).

-Flush with Restore
-Flush with Restore Plus
-Multiple Flushes with Distilled Water (you want to get rid of all those chemicals)
-This is where you take the truck down to the oil cooler and solve the EGR cooler
-Refill the system with a silicate-free ELC concentrate (CAT Rated EC-1 or equivalent).

[Deer Creek]

So if I'm not ready (prepared financially for new oil cooler) at this time, I should just reassemble and top off fluids?

[ButtNuttN8]

I bought the truck off someone else and I dont know what coolent he put in it. The Motorcraft gold stuff is colored gold correct? Im going to top off fluids witch whatever is in there install the sinister diesel coolent filter kit and run it till I save the coin to get a new oil cooler and swap it out with full flush and switching to the non ford gold stuff. So thats the update waiting for my FICM to come back to me w the new juiced tune