We have a Hurricane 31S. Two people, dogs and stuff for a week we were getting about 9.5 mpg. Throw on the Jeep and its different. The Jeep has Mud terrain tires which lend to the already not too great Jeep mileage, but thats Jeep and what you expect. Change to normal highway tires the mpg will probably go up some.
The Hurricane with the Jeep toads' fuel economy is 6.5 to 7 mpg dependent on the Hurricane speed. I generally drive the MH about 5 mph below the posted anyway, but not faster than 65. With or without the Jeep toad I found driving 55-60 gives the best highway fuel economy.
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