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Originally Posted by 4trackmixtape
Actually you can make your own "bio-deisel" in your back yard. Not sure of specifics, but a couple people here in Seattle sell the stuff.
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Bio-deisel is good idea...but I have to have a diesel car for that

And TDI VW doesn't quite cost as little as CRX.
But anyways...if you knew the details...how much is a gallon of bio-deisel and what is it's energy content per gallon? Petroleum deisel has a very high energy content per gallon...so it is hard to beat it with veggie stuff..... On bio-deisel MPG won't be the same!
I want it to be cost efficient first of all. If I wanted to save environment I would ride a bicylce.