Originally Posted by 47dodge

I am seeing 33-34 degrees with the fan on low and about 36 or so on high with enviro -safe industrail 12a. Looking at the pressure temp chart it looks like r-290, ie propane. This is not what the original poster used, he used the 134 replacement, which runs slighty less pressure. Both are quite nice to use.

I did have the pressure hose on my truck blow, old and rotten, should have changed it a lot sooner. It blow quite loud and vapor from it blocked my view for a few seconds as it came out every seam around the hood. No explosion though, even though it spayed right on the exhaust manifold. Now if that did not catch fire then I am not going to worry to much about it.