The short answer is Yes. "LP gas", which is what you buy anyway, is typically a mixture of butane and propane and a few other similar gases. Warmer climates use a greater percentage of butane but in severe-cold climates LP will be near 100% because it vaporizes better at low temperatures. So, the LP sold in Florida or Arizona probably has a high percentage of butane, but the LP sold in Canada does not.
Please identify the make & model of fridge when asking questions about it, so we can give more accurate answers.