Premium butane is required to ensure optimum performance of your lighter. Lighters require the cleanest butane available at a pressure of 45 psi. Recommended premium butane brands (Colibri, Nibo, Prometheus, any triple refined butane) are packaged in 10-13 oz. cans with a metal fill tip nozzle. Non-premium butane (Clipper, Ronson, Sun) and brands with plastic fill tip nozzles are not recommended as they may cause inconsistent ignition and performance.
Impurity of the gas can cause clogging of the burner valve or malfunctioning. Refill cans are available online, at your local tobacco shop or grocery store.