Those are some lucky guys then if you ask me, I know of at least 4 powerstrokes 7.3 and 6.0's that struggle to get 17 unloaded with a tune. I am not bashing diesels either I would buy one if I could afford one, there are just so many false claims like an idiot which is not one of the 4 I mentioned that said his 7.3 was getting about 29mpg stock.

 

Very true. It would certainly be cool.

 

It comes down to diesel has 20% more energy per unit then gas. If you must compare gas to diesel engines then both must be the same size. 5.4 gas VS 7.3 diesel is not valid. Gas is a solvent and removes oil so things wear out, diesel is an oil (thin) but it lubes so things last longer.

 

Diesels will cost more per unit to make. They come with 18 to 24 to 1 compression ratios and require more precision manufacturing. Fuel pumps will generally last about two years regardless of mileage and they aren't a cheap date to replace. An oil change is usually 14-16 qts on a light duty diesel engine and the oil has to be rated in accordance to the fuel you use. After the first of the year that will be the newer CJ oils. The newer low sulphur fuel will cause the older diesels to have injector issues as the sulphur has been used for years as a lubricant for the injectors. Filters are expensive as compared to a gas engine. If you don't need the torque, you need to stay away from one. They may look cool, sound cool, but they can eat you out of house and home. The diesel is more at home doing work rather than just riding around looking cool.

FWIW, I had one of the first 6.9 F-250s in the USA. A regular cab with an automatic and 3.54 gears. I got 22-24 town driving and 28-30 hiway. That's unloaded. If I hauled hay on my 24' dual tandem goose neck, I'd put right at 20,000 on the trailer and the trailer empty was 10,000 lbs. I could pull it great at 55 mph but it wouldn't go any faster unless going downhill. Fuel mileage would drop to around 11.

 

I agree with Labnerd. Unless you do heavy hauling then the diesel is not for you. I cost more to own and wears out front end componits faster. No to mention when you start craking up the fuel and the RPM they lose there reliability.

 

Since a diesel has more ci and a power adder, its easier to make more power plus the diesel fuel can handle increased injector timing, where with a gas truck you have to buy premium.

The diesel is more expensive to operate than a gas. When you figure in the filters as mentioned, but 300-425 hp is just a chip away. The torque lets it pull and pull loaded or unloaded.

If you have never driven a modern diesel, you dont know what you are missing.

 

Depends on what you are going to be doing with it. If you are just going to be driving a short distance to work, or going to the store, I have heard that that is hard on a desiel motor, and if you are going to be hauling or driving long distances than a desiel is much better. hope i didnt repeat anyone.