Hi, fellas. I believe this is my first post on this board, although I have been hanging out here for over a year. I am trying to help a friend find a device, which I believe is called a hotbox, it is a diesel fuel burning block heater often time used on large over the highway trucks. I have had friends tell me they've heard of them, and when I posted this question a while back over a practical machinist a few guys there said they had been around for a while and I should be able to find an easily on Google.
Well, when I search for hotbox or hotbox and diesel heater or hotbox and just about any other keywords I can think of, I either come up with this hot water heater for RVs or I find references to overheated bearings on locomotives. I am aware of the Espar heaters so you can buy new, but I believe they are about $1500. What my friend is trying to find is a used hotbox that he can obtain cheaply. Do any of you know of a scrapyard were such a thing may be obtained? Could any of you tell me who manufactured these devices, and possibly give me a few model numbers? Any information you can offer would be greatly appreciated!