Re: Re: Re: Re: Re: Can I make Diesel fuel out of Kerosene and Motor Oil?

Posted by Steve - IN on September 18, 2002 at 14:51:38 from (12.222.132.139):

In Reply to: Re: Re: Re: Re: Can I make Diesel fuel out of Kerosene and Motor Oil? posted by Bus Driver on September 18, 2002 at 05:41:09:

Bus Driver,

Yup. Duane is gonna run into a fine mess when he comes back and reads all this.

The flash point of gasoline is 40 degrees below zero. None of us should ever go near it. Flash point involves introducing a flame or spark to ignite a liquid. The flash point of Jet A kerosene, a C12 and C13 fuel, gets down to 29 degrees (wouldn't want your airplane at 40,000 feet not igniting fuel, would you?) which is still colder than most summer days in the field. (A Cal Tech guy wrote a lengthy paper about this stuff, it's at caltech.edu)

Maybe the term autoignition - or that temperature at which a fuel will spontaneously ignite without an external ignition source like a flame or spark is more useful here. It's about 495 F for pump gas, about 519F for Jet A kerosene C12H26 and about 600F for C16H36 - Diesel fuel.

The fewer Carbon molecules in a fuel, the lighter it is and the faster it evaporates (mixes with air) or vaporizes - volatility. Of the liquid fuels, Gas is lightest, followed by kerosene, followed by Diesel. And motor oil is heavier than any of them. That's why you can run gas and kero thru a carb, but Diesel needs to be injected. We were comparing Diesel to Kero to motor oil -- so I'm stickin' by my story.

you have a good day.

Steve

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