How long does unleaded petrol keep for?

How long does unleaded petrol keep for?
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1 Answer

Answer :

Deterioration of petrol is mostly caused by oxidation. The rate of oxidation will depend on temperature (faster at higher temperatures). Storage in the boot of the car over the summer months would almost certainly result in deterioration. Badly oxidized petrol acquires a darker color and a “skunky” aroma. It also becomes cloudy, and may have visible particles of gums, which are the products of oxidation. These are what cause engine damage. Rather than have to remember to rotate your reserve, you might want to consider buying a bit of petrol stabilizer to the reserve. This is an anti-oxident that will greatly slow the deterioration. It can last up to a couple of years with a stabilizer.
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