I picked up a 93 GMC 2500 4x4 pickup with a 6.5 diesel recently. I was looking for either a pickup or a suburban for a towing vehicle. 104k miles. Seems ok. I'd hesitate buying a post-93 6.5 diesel because the IP's are electronic then and diagnosis is trickier than on the 93 mechanical pump.

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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