imhoppster2 Posted October 15, 2010 Share Posted October 15, 2010 I drive a 2006 Mack Granite CV713 Quint axel dump. It has an AI375A engine with Allison Auto. I knew when I bought it that the auto would not get the mileage that a manual would getbut I didn't realize 4.5 to 4.75 was going to be my fuel economy. If I am standing on it all day I would expect those numbers; but I have made an effort to try and lower my speeds to increase the economy with no sign of improvement. A friends mechanic recommends a new set of injectors that will increase the fuel economy as well as performance.I guess my question is will this work? Has anyone else experienced this? Quote Link to comment https://www.bigmacktrucks.com/topic/16145-fuel-guzzler/ Share on other sites More sharing options...
Mackpro Posted October 15, 2010 Share Posted October 15, 2010 I drive a 2006 Mack Granite CV713 Quint axel dump. It has an AI375A engine with Allison Auto. I knew when I bought it that the auto would not get the mileage that a manual would getbut I didn't realize 4.5 to 4.75 was going to be my fuel economy. If I am standing on it all day I would expect those numbers; but I have made an effort to try and lower my speeds to increase the economy with no sign of improvement. A friends mechanic recommends a new set of injectors that will increase the fuel economy as well as performance.I guess my question is will this work? Has anyone else experienced this?We have lots of CV dump trucks around here. With the AI engine the usual average MPG is 5.2 so your not off by much. Quote Link to comment https://www.bigmacktrucks.com/topic/16145-fuel-guzzler/#findComment-65362 Share on other sites More sharing options...
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