I agree that direct wired appliances are superior. However, for use during limited situations, I see no problem with oil filled radiators. I've never run across the need for more than one of them even in our largest room. I also find that radiated heat 'feels' warmer than forced air. An additional advantage is that they can be moved around and selected rooms heated.

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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