RaderNed Posted September 6, 2016 Share Posted September 6, 2016 Does anyone have any figures or experience with the effect of additional weight on fuel mileage? I'm trying to figure out if a recent loss of a couple of mpg could be due to weight added (water, food, equipment, etc) or whether I need to hunt down a possible engine issue. Not burning oil, no suspicious sounds, but earlier in our four month trip we were getting 18-19 mpg, now we're getting 16-17. We have added "stuff" along the way, maybe 2-300 lbs worth. Quote Link to comment Share on other sites More sharing options...
pine_cone_express Posted July 29, 2017 Share Posted July 29, 2017 I'd like to know this as well! BUMP to the top. Someone must have some ideas... Quote Link to comment Share on other sites More sharing options...
markwilliam1 Posted July 29, 2017 Share Posted July 29, 2017 18 or 19 mpgs Really? And now concerned with only 16 or 17? Really?? I'm happy with my 14.5 mpg. Same engine as yours same length RV. I'm sure others would love to know how you get such mileage claims, I know I do! Quote Link to comment Share on other sites More sharing options...
linda s Posted July 29, 2017 Share Posted July 29, 2017 Is yours a manual trannie? I have an 18 ft Sunrader automatic and I have never gotten that kind of mileage. One time 19mpg drafting behind big rig with no winds, but seriously once. 15 to 16 most of the time at under 60 speeds. Linda S Quote Link to comment Share on other sites More sharing options...
markwilliam1 Posted July 29, 2017 Share Posted July 29, 2017 Reality Check! Thank you Linda! Quote Link to comment Share on other sites More sharing options...
Maineah Posted July 29, 2017 Share Posted July 29, 2017 Speed has more effect than weight. I never saw more than 13.5 with a 21' Quote Link to comment Share on other sites More sharing options...
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