People... . please understand that UPS makes decisions based on long term studies... . I can only assume they are not getting the life out of the chassis and body to justify the long life diesel... in every aspect of the formula the diesel will win even when fuel pricing is 50 cents a gallon more for diesel.....
Let me offer my thoughts... . I own a nice Jeep with a 5. 7L Hemi, I love and drive it... . but it costs more per mile to drive than one of my 3500 duallys... . even with diesel more money... . the key here is that the diesel truck empty at the same road speeds gets better mileage... and I expect to keep my trucks 450-500K miles... this is the key issue... . life of the engine and over all cost per mile over 450K miles... . The jeep will never make it to 450K miles... but the jeep is a kick in the A** to drive..... and is the greatest to park... my wife loves it..... you see the picture... .
Now if I traded off for gassers..... I bet I'd loose $3500-$4500 per truck in the trade..... to move to less fuel economy and higher cost per mile... . no way am I going to do that.....
Also, there is nothing we are going to do to lower fuel costs until we start pumping more oil on our homeland and install some refineries...
Think about the 2 most populated countries in the world... India and China... did you read that TATA the largest manufacture of cars in India will offer a $3500 car for their people later this year... they intend to sell millions of them and manufacturing in China is doing the same thing... they are now selling cars to people who have never, owned a car... never purchased fuel other than hay for horses and bicycle tires and tubes... . this new base for fuel will keep driving up the world market for the next 20 years... .
I was at a manufacturing plant in India... . 600 people working there and 6 cars in the parking lot that belonged to the owner and 600 bicycles parked in a row... . health care is not available so the owner has 2 doctors on staff with a clinic to care for the workers and their families... . he also owns an ambulance to take very injured workers to a local hospital because the ambulance service is not acceptable... .