I don't know if this was covered in a previous post, but gasoline burning Colemans (either Coleman fuel or Unleaded) have a "fuel-air tube" of a few different designs based upon the vintage of the lantern. Essentially, it allows a fuel-air vapor to be created in a cold generator so the lantern can be lit without preheating.
Most of the table lamps did not have this feature, instead just having straight pickup tubes in the fount. Only the last few lamp models had the same sort of fuel-air tubes as the lanterns. The first lamps and lanterns needed a alcohol torch to preheat the generator - basically some felt pads soaked in alcohol on a little clamp that was put on the generator and lit. The "Quick-Lite" lamps and lanterns featured the Q99 generator with the loop in it and only needed a pair of wooden matches to preheat it.
Kerosene lamps and lanterns always have straight pickup tubes and require preheating. Even gas models with fuel-air tubes require preheating since kerosene isn't volatile enough to vaporize at room temp. So, they have a little cup around the generator that is filled with alcohol and lit prior to lighting. It sounds like a lot of extra hassle to most people, but it's really not a big deal. I've converted several lantern models to run on kerosene as well, but still camp with Coleman fuel in them since my stove runs on it as well and a tank full will last through most all of my camping trips.
The other thing is that generators will clog up with carbon residue quite a bit sooner on kerosene. The kero models have larger diameter generators to minimize the effects, but I've found running Kleen-Heat or similar top quality kerosene results in barely any more buildup than Coleman fuel. Bulk pump kero has been both very good and very bad - even from the same station and pump.
It's fun taking a 90 year old lamp and experiencing what it was like before electricity was installed in homes.