Conversion Van Mileage?

[Robi]

We had an 88 Ford 150 conversion van - standard style conversion - and probably got abpt 18 - 20 highway.<br /><br />Our current RV has a HIGH camper top - with a sleeper extension over the cab - and we get 13 - 15 highway.&nbsp; It's also equipped like a house, so there's a great deal of additional weight.<br /><br /><img rel="lightbox" src="http://bentfalcon.files.wordpress.com/2011/04/gyrfalcon.jpg" class="bbc_img" /><br />

<br /><br /><span style="line-height: 20px;">I'm confused with this thread...I'm not a techie. &nbsp;I am looking for a van for summer travel (Slab City in the summer was ROUGH!). So is 18-20 highway realistic for e-con vans? &nbsp;Also, would LOVE to see inside pics of this lovely van pictured, although the gas mileage on that is not much better than my Southwind, which I will leave parked in the desert cuz I'm looking for stealth.</span><br style="line-height: 20px;" /><br style="line-height: 20px;" /><span style="line-height: 20px;">Have considered a lumina and other type vans, but with two big dogs, that might be a bit cramped. Sigh. &nbsp;Hard to make a decision. I need help...Steve, where are you? &nbsp;LOL</span>