I have a 2004 F250 6.0 Diesel. It has been a great truck except for some minor repairs and maintinence. Every time I put my truck under a load, it seems to have coolant spill out of the overflow. Can anyone tell me why and what to do to keep it from happening?

These links may help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-3.html#post235973

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1923468

Start using full-synthetic SAE 5W-40 HDDO, in the engine, and full-synthetic ATF, in the transmission, transfer case, and power steering unit. Trucks run much cooler with these lubricants (Item 12):

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281