Re: 30+ mpg on diesel

Posted by jdemaris on May 03, 2006 at 07:01:02 from (66.218.25.62):

In Reply to: 30+ mpg on diesel posted by Rich Iowa on May 02, 2006 at 21:16:46:

Diesel fuel weighs more than gasoline and has more engergy per pound. It is also cheaper to refine than gasoline. So, it's supposed to be cheaper than gas and offer more work per gallon. But - things don't always go that way.
I've got around 12 diesel vehicles - some big, some small. In the small category - my wife drives two 1991 Volkswagen Jettas - both will get 52 MPG on the highway. She drives steep back mountain dirt roads to work and gets 36-38 MPG every fill up - which is amazing. In the winter she uses a Subaru Impreza (gas engine) and gets 19-21 MPG on the same trip. I drive an 81 Chevette with a 1.8 Isuzu diesel - it gets just about the same as the Volkswagens - a few MPG less. It will cruise all day at 75 MPH on the highway. I also have an 85 Isuzu PUP 4WD pickup truck - it gets around 30 MPG on the highway and 25 MPG around town.
With my larger trucks - my best MPG is my 82 Chevy 1/2 ton 4WD with a 6.2 diesel and four-speed overdrive manual trans - it can get up to 24 MPG. My worst fuel guzzlers are my two Ford F250 ex-cab 4WD pickups. One has the 6.9 IH diesel, and the other a 7.3 turbo IH diesel. They both get 11-12 MPG regular driving and 14-16 MPG highway. I've had a few rare trips with the turbo 7.3 and automatic-overdrive trans - on flat highway with a wind at my back that I got 19 MPG.
In Europe there are many neat little diesel vehicles - but they cannot be sold here without getting certified and updated to meet US specs. Just recently, a company started selling a British diesel car - mostly for the taxi-cab market - here in the US. They had to invest a lot of money to get it US certified. I don't know what kind of mileage it gets. It has a Ford diesel engine that was designed by the same company that made the engine in the 1960s Allis Chalmers ED-40 tractor. You can read about it at:

http://www.dieselforum.org/where-is-diesel/cars-trucks-suvs/london-taxis-in-north-america/

Replies:

• Re: 30+ mpg on diesel Mike M 07:36:03 05/03/06 (1)
  • Re: 30+ mpg on diesel jdemaris 09:38:02 05/03/06 (0)

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