Here's the data I collected. The consumption data was for a 1.00 hour run of a 1.5L Isuzu in a 12.5kW Onan/Cummins generator on a load bank set at 6250 watts. Three GDiesel samples were purchased from three different locations listed on the GDiesel web site. Two control samples were run, Shell and Chevron, both EPA 49 state ULSD. Density in g/ml at 21C:
Calorimetry in calories/gram:
Shell 0.8340 Chevron 0.8303 GD1 0.8306 GD2 0.8286 GD3 0.8282
Consumption (grouped by day) in g/hr.
Shell 10,879 Chevron 10,926 GD1 10,933 GD2 10,925 GD3 10,939
The GDiesel showed an average of 0.30% lower consumption compared to the two controls. The average margin of error based on the replicate samples is 1.05% Ed
Shell 2158.17 GD1 2173.26 +0.70% Shell 2147.51 GD1 2137.92 -0.45% Chevron 2169.42 GD2 2164.65 -0.22% GD3 2142.28 -1.25%