Anyone have general figures on what is normal? I talked to a guy driving a Chevy 4wd 2500 Duramax diesel yesterday as I was filling with fuel. He said he got 15 mpg but drove a lot in the mountains. I thought he would have gotten better than that. A former neighbor told me he got 21 or 22mpg from his late 90's Dodge Cummins pickup with a 5 spd standard transmission.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13