I am under the impression that most new German refrigerators just use propane. If it bothers you to think of putting propane in your car, just go to the local propane outlet and ask them to fill your tank with naturally occuring hydrocarbons and it should put your mind at ease.

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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