I recently returned from a trip to France. The diesel there is about 20% less than reg. unleaded. There are a lost of trucks on the highways, but I understand they are not as heavy as trucks in USA. Also a lot of the cars burn diesel. It appears most of the taxis in Paris are MB diesels. I don't know why their diesel is priced the way it is.

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Gary
85 300D Ivory, 202,000
Beatus exsisto Jesu, verus et Deus verus Vir