It will be interesting to see what the diesel F-150s get as far as mileage. They're a lighter truck than their big brothers. Anyone know the mileage differences between the gas and diesel F-250s?

I just remember the old 1/2-ton GM pickup diesels from the 70s. Recall one person say he was getting 25-28mpg highway, when the gas versions were in the 15mpg range.

Gets back to fuel cost per mile, not per gallon.

 

Why do guys with the southern drawl sound like Bubba, and the girls from the south sound so secksay................mmmmmm,southerngirls, tasteslikechicken.

 

The 2007 emission standards are killing diesel mileage. I'm hearing less than 20 on a diesel Super Duty, the 5.4 does almost as well.

 

glc - you seem to be up to date on diesels.

Any word yet about the effects of the ultra-low sulfur diesel? I have heard prophetic ramblings how this is going to damage the injector pumps and injectors due to the supposed lubricating benefits of sulfur. In fairness, this came from a supplier of a diesel additive that claims to cure this issue.

Also have heard that the bio-diesel has a problem with 'shelf-life'. The bio component degrades over a relatively short time????

Sounds like we're in a learning loop again with emissions. Still remember how everything was gagged down in the 80s to meet the then current regs, but eventually much of the loss was eventually recouped.

 

I heard about the deisel F-150's. But boy is that exhaust going to sound weird... How are diesels supposed to get better gas mileage than gas engines? Theyre pulling the same, if not more, weight and the $3.07/gal 87-octane gas is a lot cheaper than the $3.54/gal diesels...

 

I look at a simple fuel cost per mile calculation.

The diesel will get unbelievably better gas mileage than its gas counterpart. No matter how many miles are driven, the gas consumption will be always be zero. So I suggest that a diesel gets infinite miles per gallon gas. :-)~

But, seriously, assuming the gas F150 gets 20mpg, then the diesel version would need to get 20 x ($3.54 / $3.07) = 23 mpg for the same fuel cost per mile. At face value, I think this would be easily obtainable.

However, one other member pointed out that the new diesel emission regs are pulling the diesel mileage numbers down from previous values. Guess we'll have to see what the EPA or Consumer Reports or whoever publishes.

In addition, one would have to take into account the higher purchase price of the diesel motor along with any difference in routine maintenance costs between the two motors. And there are other factors to consider such as lifespan, and ease of getting the fuel - can get gas almost anywhere, diesel is a bit less available - etc. So things get fuzzified a little here and one will have to make a judgement call based on their driving needs.