I didn't read the entire article on the conversion. I quit after I came up with 2 questions.
1. I wonder what reducing the size of the oil sump does to the Isuzu engines reliability. Nothing good I bet.
2. When you consider that diesel fuel will cost at least as much as gasoline and the cost of the conversion, how many years of slightly improved mileage will it take to recover the cost of the conversion?
Seems like way to much work for to little gained.