We finally have some direction and labor ops to boot.
This article supersedes TSB 07-21-5 to update the Service Procedure.
ISSUE:
Some 2003-2007 F-Super Duty, 2003-2005 Excursion and 2004-2008 E-Series vehicles, all equipped with a 6.0L engine, may exhibit:
Coolant venting from the degas bottle cap
No-crank/no-start
Coolant leak
White smoke from tail pipe
Low coolant
Lacks power overheat
No cabin heat
The conditions typically occur when operating the vehicle under a load such as trailer towing, uphill driving, or both.