Additionally gasoline degrades after some time and would be mostly useless after 4-5 years without substantial additives and work to bring it back into shape.
Not useless, but it can go bad much quicker. A few years ago I lost a rotary hoe because the engine had been damaged and the carburetor had gotten clogged. The fuel was less than a year old, but closer in color to cooking oil.
If gasoline sits in open air or a non-sealed container for a long time, its lighter fractions will eventually evaporate. The heavier fractions can cause blockages and misfires. It can still be used, but you have to dilute it with fresh gasoline. If it happens while inside an engine, the carburetor should be rinsed with fresh gasoline to remove clogs.
Additionally gasoline degrades after some time and would be mostly useless after 4-5 years without substantial additives and work to bring it back into shape.
I believe kerosine can last up to 10yrs
Not useless, but it can go bad much quicker. A few years ago I lost a rotary hoe because the engine had been damaged and the carburetor had gotten clogged. The fuel was less than a year old, but closer in color to cooking oil.
If gasoline sits in open air or a non-sealed container for a long time, its lighter fractions will eventually evaporate. The heavier fractions can cause blockages and misfires. It can still be used, but you have to dilute it with fresh gasoline. If it happens while inside an engine, the carburetor should be rinsed with fresh gasoline to remove clogs.