Posted by Dan in Houston on May 08, 2008 at 11:13:20 from (38.100.70.66):
In Reply to: Off road Diesel ? posted by Jiles on May 08, 2008 at 09:53:26:
when you refine a barrel of oil, it doesn't all convert to gasoline because it is a mixture of all sorts of different hydrocarbon compounds. You get a certain amount of gasoline, so much diesel, some asphalt, some petroleum coke, etc, depending on the composition of that particular oil. Only about half of the oil, at best, is converted to gasoline, the rest is lower value products. Gasoline is the highest valued component, and the refineries are set up to try to get the most gasoline out of a barrel of oil. There has been a lot of technological advances since the 60's, particular in the area of catalytic crackers, that allow refineries to get more gasoline out of a barrel of oil. So there's less diesel left over, and that's one reason why diesl prices are now higher than gasoline.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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