Diesel is just fine. I sell pressure washers that are self heating. They use the same style of heater and 99% of the machines I sell live their whole lives on diesel. And, another note to whom it may concern, the InfoLinks pop-up makes this site nearly unusable. Does the ad have to be so intrusive that you have to hit the"x" to get rid of it on every single page, just so you can see the page? It's rare that I also don't get directed to the InfoLink page because I clicked on a thread just before the ad fully loaded, only to find that I clicked or tapped on an ad I couldn't see yet.