JaxDad wrote:
Lots of misinformation here. It’s not propane, it’s LPG, Liquified Petroleum Gas.
It mainly consists of propane (C3H8) and butane (C4H10) or a mixture of both with several other light hydrocarbon compounds. Like gasoline it’s components usually vary depending on where and when you buy it. Buying LPG in south Florida and then heading to the frozen north of the continent might not work very well.
In the USA, it's typically Propane with just trace amounts of other components. So calling it "propane" is quite reasonable and you are unlikely to find significant differences between Florida and Indiana.
In some other countries (typically where they don't experience extreme cold), they may use a larger percentage of butane.
Of course, this is largely irrelevant to the OP find the leak in his system.