[Wharf Rat]

Despite the advice, please remember that references to "X times refined" are actually marketing BS. Companies like Ronson or Vector can buy bulk supplies of gas in whatever purity or mixture they want. You need to buy fuel that is known by experience to work well (I use Vector). Two companies could each put "mega times refined" on their can and yet, the gas inside could be different. There is no standard definition like "octane" to work from.