milage 6.2 chev van g20 diesel

curious.on the mileage of a van in good condition of its highway mileage.

I've got a '90 GMC Suburban

I've got a '90 GMC Suburban that I run a single tank system on, and I get about 20-23 mpg, whether it's using diesel, wvo or mixed. I don't know what the weight specs are, but unless yours is a conversion van, and maybe even if it is, I'd think they may be close. Mine is automatic, 2wd with a 700 tranny. All the seats are in. I guess you would have to deduct some weight for the rust holes in the rear quarter panels and bracing under the back door. :)

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