Originally Posted by 9228.bobcat

Best bet is not to hurry it. Wait until cool enough before adding cold water. Warming the water up will help and speed up the process.

Originally Posted by SUPERTEK94

I have an '06 that I purchased 1 year ago. Never used any coolant and temp differential was 7-9 degrees at 70mph open highway. Read the posts here about Ford Gold coolant, and did the full flushes with Restore, Restore Plus, and distilled water. Replaced with an ELC and added Desielite filter. Immediately after the flushes with 45 minutes high idle each flush (a 6 hour ordeal) I drove the truck on the highway and noticed hugh amounts of white smoke from a dead stop. This has settled down to only a little at startup...and then sometimes not at all. I have noticed that the temps are now between 5-7 degrees, but I am using about 1/4" coolant in the degas bottle over a 2-3 week period. EGR cooler? Head gaskets?

Originally Posted by Mcrafty1

Lets see if I understand this.....You had an 06 6.0 for a year and deltas were good at 7-9 degree at 70 mph on the open road.....WITH Ford Gold, read about all the bad things about that and run home and immediately swapped it out for the GOOD stuff and blew the EGR cooler? Interesting, now I'll admit you don't state the mileage you have on this truck BUT it IS an 06 and was doing good on FG.....mmmmm, I'm glad it all worked out for you but I think there is a lesson to be learned here about fixing something that's not broke. jmho

Originally Posted by bismic

In some things it pays to be proactive, and others it doesn't.

With the 06, the following proactive things are a good idea (IMO):
1. FICMrepair.com upgraded FICM
2. STC fitting replacement
3. Dummy plug and standpipe upgrades
4. Fuel pressure regulator "blue spring" installation

An upgraded alternator is a very good idea, but not everyone needs it.

Gauges are a must.