Using my 42 real - world diesel mpg, which most drivers should be able to match, against the 30 highway mpg rating of the gas - engine Equinox 1.5 T, and using the AAA's late - May average fuel prices of $ 3.20 a gallon for diesel (plus $ 5 for a gallon of diesel exhaust fluid good for 10,000 to 12,000 miles), versus $ 2.96 a gallon for regular unleaded gasoline, yields a cost per mile of 9.07 cents for diesel and DEF; 9.87 cents per mile for gasoline. (extremetech.com)
Ford has fitted the F - 150 with a 5.4 - gallon diesel exhaust fluid (DEF) tank, which it says is good for 10,000 miles. (automobilemag.com)
Like every GMC vehicle, the 2015 Sierra All Terrain HD comes with two years of scheduled maintenance, which includes diesel exhaust fluid refills, a three - year / 36, 000 mile bumper - to - bumper warranty and a five - year / 100, 000 mile powertrain warranty. (kbb.com)