That's a good link, but it seems to contradict what I've read here. That's part of the problem; it doesn't appear that too many people have messed around with this. Since most newer cars automatically adjust, it's not a big deal. My 3 test cars are a '95 E300D, a '99 F350 with a Power Stroke, and an '03 VW Golf TDI. I run the same fuel in all vehicles. The MB went from 30 MPG to 26 MPG, whereas the Ford went from 19 to 18 and the VW went from 48 to 45. My car saw about a 13% economy hit where the Ford saw a 5% hit at the VW was around 6%. I assume that the computer controlling the electronic injection in the latter two is automatically compensating for the different burn characteristics of the biodiesel, and I figure I should be able to do the same manually on my car.

Still looking for any input.

Thanks again.

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J.B. Hebert

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Current Vehicles:
'76 Ford Bronco
'78 Volvo 262C Bertone V8
'80 Alpina B7 Turbo Coupe (For Sale)
'94 Ford Explorer
'95 Mercedes E300D Sportline+