Quote:
Originally Posted by Skymaster337B
The best diesel fuel engines are turbines. However, a turbo prop Skymaster is so cost prohibitive. Avgas engines are here to stay...until the unelected EPA outlaws 100LL.
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It depends what you mean by best. Gas turbine engines have by far the best power/weight ratio, but the fuel consumption is poor other than in the cruise at altitude. Diesel engines are heavier but with generally better fuel consumption.