Your Turbo is not providing boost.
The optional diesel engine in an '04 F250 Ford is a 6.0L V-8 Turbo Diesel made by Navistar (International)
7.3 Liter Turbo
7.3L turbo
Engine air filter
Normally that would be the low fuel warning light
go to a mechanic
The 2003 Ford F250's never came with a 7.8 diesel ... they did however come with a 7.3 diesel turbo charge and are good engines. As for transmissions , all depends what kind ... manual or automatic ?
The 2003 Ford F-250 Super Duty with a 6.0L Turbo Diesel engine typically requires about 15 quarts of oil, including the oil filter. Always check your owner's manual for the exact specifications and recommendations for your specific model.
No spark plugs on a diesel
7.3 turbo takes 12 quarts
Most f250 fuel tanks if single are 24-25 gals
A 2003 Ford F-250 Turbo Diesel typically requires 15W-40 weight oil, which is suitable for diesel engines operating in a range of temperatures. It's important to use oil that meets the API (American Petroleum Institute) specifications for diesel engines, such as CJ-4 or higher. Always consult the owner's manual for the most accurate recommendations specific to your vehicle and driving conditions.