paraffin oil:
is essentially kerosene:
"James G. Speight PhD, DSc, in Handbook of Industrial Hydrocarbon Processes, 2011
Kerosene and related fuels:
Kerosene (kerosine), also called paraffin or paraffin oil, is a flammable pale-yellow or colorless oily liquid with a characteristic odor. It is obtained from petroleum and used for burning in lamps and domestic heaters or furnaces, as a fuel or fuel component for jet engines, and as a solvent for greases and insecticides.
Kerosene is intermediate in volatility between gasoline and gas/diesel oil. It is a medium oil distilling between 150 and 300°C (300–570°F). Kerosene has a flash point about 25°C (77°F) and is suitable for use as an illuminant when burned in a wide lamp."
We use straight kerosene from the pump, trim the wicks often, and when doing so we cut (bevel) the corners on each side so it in effect narrows towards the top leaving a flat area approx 2/3 of the width of the wick. For years we used lamps every night at dinner and this worked well to minimize smoking. But kero didn't smell as good as some lamp oils and does degrade the indoor air, so now we've gone to LED candles at meals.