Fluid Inspection and Repair Plan

What happens here

After the truck is in the shop, the owner begins the initial damage assessment. He checks the engine oil, noting it's still black, which is a good sign as it indicates minimal water intrusion. He also confirms the coolant system is sealed. The main tasks remaining are to drain all fluids from the axles, transfer case, and transmission, and to fill the engine with diesel fuel for a thorough cleaning before refilling with fresh oil. The intention is to fix the body and use it for an upcoming pulling contest, potentially with a junkyard turbo build.

Goal: Perform initial diagnostics and plan for comprehensive repairs and modifications.