MONTIE Report post Posted May 30, 2010 Can you calibrate the Aladdin Jr, coach computer, it seems as if mine always show less fuel used than I can pump in the tank, the Last time I figured on a 200 Mile trip it was off 3 gallons. Made about one mile per gallon in fuel average per mile. The rest of the numbers are usually right on. I have a computer in one of my cars and the fuel used is usually close but it only holds 18 gallons as compared to 100. Suggestions anyone Share this post Link to post Share on other sites
hermanmullins Report post Posted May 30, 2010 Montie, I have a Trip Tec and I called them on my unit. According to the readings my lifetime average was 98.46 MPG. Wouldn't that be lovely. Trip Tec told me that that information comes from the engines computer and needed to be re-calculated by Cummins. Maybe you could visit your local dealer and ask if they can make the needed calculations. Hope this helps. Share this post Link to post Share on other sites
MONTIE Report post Posted May 30, 2010 The Mack Cummins dealer is next door to our office, will call tomorrow Thanks. Montie Share this post Link to post Share on other sites
