Even treated gas will only last reliably for 12-24 months in well sealed
containers. High octane, alcohol free fuels will do the best.
Diesel can store well for up to 10 years in sealed containers. Treating it
is a good idea. Biocide and anti-oxidant. #2 Non-biodiesel is the best but
may have gelling issues in colder weather.
I am upgrading all my primary equipment to diesel engines. Lister and
Listeroid engines are good back ups.
This should arrive Wednedsay.
Upgrading from my Trailblazer 302 gas engine, that unit is already sold.
both have 10kW of aux power, I regularly back feed my house or shop as
needed when the power fails.
BTW, I am a chemist and work for http://www.aftonchemical.com/Pages/Home.aspx