F350 6.0 Starts cold runs well, if truck is shut down it will not restart until it cools

See if there's a temperature overload, to prevent engine damage. Have you been changing the coolant every 2 to 3 years, using distilled water with the proper antifreeze and SCA? This link may help:

https://www.askmehelpdesk.com/cars-t...ml#post1923468

Temp overload how would I check, Fluids have been maintained, new oil cooler, egr, head gaskets, rebuilt turbo, all in six months, had 1 of two batteries heat up / short this is the latest issue since vapor lock. Altenater is porforming well

Call your local Ford truck dealer. Start using full-synthetic HDDO, to protect your turbo and a host of other reasons:

https://www.askmehelpdesk.com/cars-t...ml#post1415281