Here's an interesting development. On a whim, I googled Sunbelt Rentals which I suspected was the original owner of the truck. They were selling another truck online. I sent an e-mail to the addressed listed, explaining that I owned what I thought was one of their former trucks (gave the VIN #) but had no maintenance records, asking whether they had any. I got a nice reply indicating that they had the maintenance records in their computer and if I gave them my address they would send me a copy. Quite surprising in today's world.

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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