An engine dynamometer measures torque (lb-ft), not mechanical energy (ft-lb); and an engineâs âtimeâ is expressed in revolutions per minute (rpm). Since 6.28 ft-lb of work is about equal to 1 lb-ft of torque, you can substitute the eqautions in Figure 2.
DEF weighs approximately 9 lbs per gallon. Compared to diesel fuel at approx 7.05 lbs and gasoline at an average of 6.19 lbs, DEF is a relatively heavy product.ow much DEF can I haul? With DEF weighing in at around 9lbs per gallon, we estimate that with a tandem axle truck tank you will be able to haul just over 3000 gallons in most states. For trailers the capacity will be around 5,000 gallons.
Gallons measure volume and grams measure mass (weight, in common parlance) so they're not interchangeable. It's a bit like asking what your height is in pounds. Water (the usual standard) weighs 1 kilogram per liter so a gallon, which is about 3.78 liters, would weigh 3780 gm. However a gallon of cooking oil would weigh less because it's less dense, while a gallon of mercury would weigh a heck of a lot more. 10 people found this useful.