I own two 6.0 powerstrokes. The work truck (2004 F450) and the family truck (2006 F250 Lariat 4x4, 33,000miles). I just returned from Ford after leaving the 2006 F250 with them for 3 days. My complaint was coolant level low. Coolant residue splashed under hood from fan. Degas Bottle has debris and sand at bottom. Loss of fuel economy.
Ford said that there were no leaks in the system. Pressure tested and found no leaks. My concerns about debris in the cooling system were not even noted on paperwork. I waited for the service manager. He told me that Ford has revised the recommended intervals for cooling system flush. So I asked to see the TSB. He found TSB 09-8-5 he was referring to, the recommendations remain the same. Check every 6 months, initial change 105,000 miles, subsequent change every 45,000 miles. I asked the manager to make a note on my paperwork that the debris and casting sand and glycol crystals were normal, and he did. With his signature!!
I know that the system needs to be flushed ASAP. My problem is, shouldn't Ford cover this if the system is compromised before the 100,000 mile powertrain warranty expires?
I should also note that ECT and EOT temperatures were within 7 deg on a family trip this weekend. I also didn't loose any coolant.
Exact quote hand written on HUB City Ford ticket
"Degas Bottle has traces of Casting Sand in bottom of bottle. This is a normal condition
Tommy Arceneaux "
By "traces" he really means there is a ton of Sh*t resting at the bottom of the degas bottle.