The ethanol in fuel is also a killer for fuel systems. I try to find ethanol free fuel, but it is getting harder to find. I use mid range in my mowers now. I still use some old metering rods to clean the orifices.
“The ethanol in fuel is also a killer for fuel systems.”
Ethanol is really great in marine applications, like outboards. Some older fuel tanks are fiberglass, and the alcohol eats the fiberglass. The alcohol destroys fuel lines, corrodes aluminum (lots of engine parts) and absorbs water better than a sponge. And the ethanol gas goes sour quick.
Cost me a grand last year, and I’ve had to do more work (myself, good thing I’m mechanically inclined) this year.