As of 2012, NACE reported that mechanical engineers with a master's degree started at an average of $75,700 -- significantly more than the average starting salary of $61,300 reported by mechanical engineers with a bachelor's degree.
How many gallons does a semi truck hold? Quick Answer. Semi truck fuel tanks vary in size, but they hold an average of 125 to 300 gallons of fuel. There is a fuel tank located on each side of the tractor, and fuel is distributed between the two tanks to balance weight.
How much does one gallon of diesel fuel weigh? About 7.15 pounds The density of No. 2 diesel fuel is 850  grams/liter = 1.874 pounds/liter = 7.15 pounds per US gallon.  Regular gasoline is considerably less dense: 6.0 toâ¦ 6.3 pounds per  gallon.