Over time, the quality of fuel left in your fuel tank reduce. This can lead to starting issues especially when dealing with seasonally used fuel driven apparatus such as mowers or a camping generator.
Petrol can become stale, leading to ‘gumming’ up of the fuel lines and fuel pump and tank. Diesel can do a similar thing called ‘waxing.’ Fuels sold at you local petrol station will contain additives to help delay this process but even they can only do so much.
Here are a few tips to try and get the best out of stored fuel.
1. Try and keep fuel in an airtight container, an absolutly airtight container can help prolong its optimum life to up to 6 months before any significant detoriation begins to occur.
2. A higher octane fuel will detoriate at a slower rate than a less quality fuel.
3. Consider using a fuel stabiliser. A good quality fuel stabiliser used at the optimum dilution can help protect a tank of fuel for a few years.

it also helps in an air tight container if it is full , lol
quite right
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