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A reasonable considerate post.
Uh Mech you goofed, the bsfc should be factored from 200 to 172 for a diesel because it is calculated based on weight not volume.
So the comparison should be the percentage difference between 171 and 250 which is a more accurate representation of the difference in efficiency between gas and diesel engines.
A diesel engine produces 250/171 of the useful work of an equivalent gasoline engine. This is about a 46% improvement based on the weight of the fuel.
By volume the difference would be lower because gasoline is lighter than diesel by about 14%.
Got it.
regards
Mech
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