Recently, was gifted a set of Wolfard oil lamps that had been my mother's for almost 20 years. She is adamant about using Wolfard oil and wicks. I can see why after trying another supposed "best" oil product. Wolfard oil burns cleanly. No soot. Wolfard wicks are best. Mom is always right! The glow of the lamps is inviting; very sophisticated and yet so perfect in creating welcoming warmth. I'm hooked.