I have heard, and I believe, that gaseous fueled engines .... NG, LPG, etc far out last liquid fueled engines.
Diesel is better than Petrol. Fuel stability is a real concern.
I wanted to do a bit of research before saying any more than I did in my Kubota endorsement. I was a bit startled by lost's comment about gaseous fuel = long engine life, since I grew up learning the opposite. My few minutes of research turned up this website:
https://www.generatorjoe.net/html/genfuel.htmlThere, one reads (about diesel):
Engine life for liquid-cooled 1800 RPM engines can approach 20,000 hours if properly serviced depending on the application and environment.
And about gas:
Engine life for liquid-cooled 1800 RPM engines can approach 5,000 to 6,000 hours on industrial quality gaseous GenSets
The foregoing squares with what I have always believed. BUT, if I spend a few more minutes on google, I can probably turn up a website relating that there are gas-fired gennys that came over on the Mayflower and are still in daily use.
I DO disagree with the source cited about an 1800 rpm diesel running for only 20,000 hours if all goes well. I am guessing that one I know of around here, used in a camp operation, is probably getting close to 40,000 hours as I write this.
As for fuel storage, for me it's a non-issue. We do not store copious amounts. Our diesel genny and Kubota side-by-side ATV (another great Kubota product) sip fuel and probably burn all of 50 gallons in a year, if that. We never have on hand anything close to that. No need. We bring gasoline over for our trucks, chainsaws, etc., but again, never more than 25 gallons in storage at any time. We used to buy from the fuel boat, that would pull up to our beach and fill us up. Then we would buy about 140 gallons at a time. But we just don't use all that much, so hauling a few cans from town now and again is much more cost-effective. One pays a premium for the convenience of the fuel boat.