Generator comparison question

robert@honda wrote:

...
Caveat: In the USA, converting a portable gasoline generator to run on propane or natural gas, etc. without having it re-certified by the EPA violates the Clean Air Act. ...

-Robert@Honda
Caveat: I work for Honda, but the preceding is my opinion alone.

So conversion from exclusively gasoline to exclusively propane, as I have done, puts one in the interesting position of likely polluting the air much less than gasoline but not having the paperwork to "permit" it. :R

Also, with a load block to adjust propane or NG flow, there is no need for the engine to operate hotter.