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.
Most can carry 300 gallons of fuel. At 6 miles per gallon the truck could cover 1,800 miles, at 8 miles per gallon it could go 2,400 miles. Fuel cost from $3.80 to $4.00 per gallon. At $3.80 per gallon it cost $1,140 to fill the tanks.ost can carry 300 gallons of fuel. At 6 miles per gallon the truck could cover 1,800 miles, at 8 miles per gallon it could go 2,400 miles. Fuel cost from $3.80 to $4.00 per gallon. At $3.80 per gallon it cost $1,140 to fill the tanks.