hey gang, I know my truck is past due to have its coolant flushed *06 6.0* and i am wondering where to get the info to tell me how to properly flush it?
I know i need to drain it obviously and refill it with water and let it run and then drain again and refill with motorcraft coolant. anything else?

 

1. Drain coolant
2. Add 2 cans of VC-9 and top off with distilled water.
3. Drive 20 to 30 miles, preferably at highway speeds.
4. Drain radiator at petcock first, then pull lower hose. Then remove block plug on driver side. Not necesary to do passenger side.
5. Remove t-stat. To do this, remove air cleaner. Then 2 nuts on t-stat housing. Pry press. sensor bracket off of studs. Tight fit but it will move. Remove 2 more nuts and pull t-stat and housing from studs.
6. Remove t-stat and put housing back on. Re-assemble everything and fill with distilled water.
7. Run at 1200 rpm's for 3 to 5 minutes and drain as described in step 4.
8. Repeat 4 to 5 times or untill water coming at is as clear as water going in.
9. Install t-stat using new O ring. I used vaseline to hold the O ring in place.
10. After everything is re-assembled fill with a 50/50 mix of Ford premium gold or Zerex GO-5.
11. Start engine and check for leaks. This is a lot easier and quicker than it sounds. If you don't remove t-stat then you have to run truck between each flush till t-stat fully opens and then let cool down to work on it.

Highly recommend installing coolant filter kit while cooling syatem is empty

 

From our tech folder, which is public, and can be viewed by all, young and old.

https://www.ford-trucks.com/forums/9...nge-101-a.html

 

Zerex G-05 coolant is what ive used Napa sells it.

Drain rad at petcock,drop lower hose to drain the rest,block drain plugs both sides PITA to get to.

i picked up 4 gallons coolant
distilled water from walmart was like 75cents a gallon got 15 gallons

i dumped and filled till it ran clear the 3.5 gallons of coolant topped it off full

 

ok thanks guys

 

why does a guy have to use distilled water for the flush. Whats wrong with tap water. also i thought the gold coolant was crap

 

Distilling removes salts and minerals from the water. These impurities would precipitate out of the coolant and become solids in your system.

Incidentally, the Gold coolant instructions on the bottle say to use distilled water. It is not something we made up.

 

I know its not made up and I know its recommended. I'm just talking about the flush, not the final fill.

 

I don't know if it is critical to use DW with the cleaner. But I don't see any reason to not use it, if there is any doubt.