I use regular clear kerosene I get at a gas station. You can use lamp oil if you want, it's more expensive but comes in easy-to-stow containers. Kerosene is an oil, not a solvent, but it will gel with time (years.) Don't use ultra-pure or oil candle oil, that's a different grade and weight and will clog your wick. As far as Lanterns, you can still get Dietz branded models. They're made in China now and have been since Dietz sold it off to them in the 1950s. Pretty much all of the modern oil "hurricane" lanterns you see these days are made off of original Dietz patterns. V&O, Rayo, etc... These units have a big tank and tend to burn for a day straight: https://lanternnet.com/product/dietz-1-little-wizard-large-fount-cold-blast-lantern/ - these have been made for decades, burners, globes, and wicks are interchangeable with models made on Day 1 of this device's production. I don't really like the colored ones, the paint smells, but you can't get black ones easily these days. They all work the same, tho. Don't bother with ones you see in the antique stores, they want too much for them and they're probably rotted out in the tank. Only reason I'll buy one of those is if it's super-cheap and has a nice embossed globe on it, or I find some like the new tagged USA made units the guy only wanted $20 for because one needed a little repair.