I'd say you are low on the gasser mpg and high on the DP mpg. Of course that does depend on the specific coach. Our 2003 Executive with ISM500 Cummins gets 6-7mpg. Our previous Workhorse Pace Arrow gasser, got 8mpg.
berreez wrote:
Here is a formula I came up with showing the difference in diesel vs gas.
Gas Tank Cost Fill up MPG Distance per tank
80 gals $2.93 $234.40 6 480 miles
Diesel Tank Cost Fill up MPG Distance per tank
80 gals $3.54 $283.20 9 720 miles
720 – 480 = 240 miles further for a diesel. 240 miles / 6 mpg = 40 gals more gas to go same distance. 40 gals X $2.93 = $117.20. $117.20 + $234.40 = $351.60 in gas to go the 720 miles or $68.40 more than what was put in the diesel’s tank.
Is this correct?