Quote:
Originally Posted by oil pan 4
BBQ gas isn't R-290.
I read some where that propane fuel had up to 10% butane and a few percent of other hydrocarbons in it.
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The 10% figure is an industry standard. In the USA, at gas stations and walmarts everywhere, the propane in cylinders is pretty pure. The only contaminant besides the stink oil that gets into the percent range is propylene. In the refrigeration circuit, propylene acts even more like r-22, due to its higher molecular weight. Butane and other natural gas ingredients are distilled out to the ppm range at the refinery.