That's the problem question with everything. Our Whirlpool fridge is still running after 22 years with no problems. A new replacement Whirlpool is all new technolgy, new factory etc. and designed for maximum effeciency with little regard for lasting 22 years.
On fuel, I ran into serious problems with old 4S and 2S fuels that went bad, probably due to water absorption. The fuels had sat around too long due to a slow season last year. I believe water got in due to sitting with a pump mounted on the jug, and due to pumping unused fuel back into the jug [it gets water due to the exhaust pressure]. I am going to use more of these 2 quart jugs
http://www3.towerhobbies.com/cgi-bin...LXJ810&P=7 and I found a handy pour spout at Walmart auto section for $.50 because pouring fuel out of a jug always dribbles down the side of the 1 gal jug.. I am going to store any fuel pumped out of tanks in a "USED" jug. I spent a ridiculous amount of time tuning engines and changing glow plugs before I figured out the fuel was bad. In addition to start and tuning difficulties, the engines would suddenly quit mid-flight. Problems with about 7 engines cleared up when I started using new fuel and re-capping the jug every day.