Generator comparison question

robert@honda wrote:
In addition to starting/choke issues, propane and natural gas burn hotter than gasoline. This can cause the exhaust valve and exhaust value guide to overheat and possibly fail sooner.

With all due respect, propane actually runs cooler than gasoline when properly set up and adjusted. Why?... because it contains lower BTU's. The reason valves burn on dry fuels is because of the lack of lubrication & cushioning on the valve's face & seat. The constant metal-to-metal contact of the valve face & seat, disrupts the seal and eventually causes exhaust leakage. The continued exhaust leakage eventually burns the valve, not because of direct overheating. This isn't an issue when Stellite valves & seats are used.

-kenny-