Instructables

Old oil heaters?

Hello, just wondering if anyone could post any links or anything about old oil heaters. Not the pressure fed ignited furnace type, but the gravity fed ones with a simple carburetor. I have one in the garage that originally came from an old railway caboose. The previous owner (5 years ago) used to heat the garage with it but I haven't the foggiest how to clean, light, or maintain the thing. I'm sure if I take it apart I will be able to figure it out, but was just wanting to get and idea of what to do to it to maintain it. Thanks in advance!