To my friends across the pond- what specifications (or grades) are there for propane? Over here there's commercial, HD-10 & HD-5. Each has it's own guidelines as far as contaminates, % of propane in mix, etc.

I'm having a fuel issue with a GFI system, with sequential fuel injection. In doing research on the system I found out that it's a widely used conversion on autos in Europe. I need to find out if the fuel in your corner is cleaner than over here. I also noticed that on the auto conversions, there are more filters installed- I'm thinking that maybe the filtration &/or cleaner fuel is the key.

The grade/purity of the lp fuel seems to be all over the place where I am (outside Phila Pa). I have some units where the fuel systems seem to last & last, others need constant attention. There's only 1 local lp supplier that will certify his propane is HD-5- none of the other locals will even agree that different grades of propane exist (propane is propane- what's your problem?).

With automotive propane conversions becoming more prominent here (especially in California), I think that an education in fuel quality is needed.