Quote:
Originally Posted by tjts1
I think part of the "less power" problem is that our older engines can't automatically adapt to the lower energy density HPR by adding more fuel for a given throttle input. Newer EFI engines can do this.
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Not likely. There is no throttle plate, at least in 1985- M-B diesels. The "fuel pedal" simply controls the volume of fuel sprayed. Thus, there is no need to compensate for different fuels. The latest M-B diesels do have a throttle plate. However, not sure it is intended to control air flow rather than impart swirl to the air stream at low rpm for better burning (better mileage, lower emissions).
I am on about my 4th tank of Diesel HPR now and still happy with it. The price is holding 10c/gal less than reg unleaded. The engine runs noticeably quieter, which was my wife's main complaint. She would be embarassed driving a car with the normal diesel sound. She even talked about driving it now.