How long diesel fuel will last depends on various factors, like the storage method and the ambient temperature. High-quality diesel fuel will stay fresh for a year if stored under ideal conditions. The ‘ideal conditions’ refer to diesel fuel stored in an airtight, sealed container in a cool, dry place, preferably around 70°F or 21°C. Since we don’t live in constantly ideal weather, diesel fuel needs additives or stabilizers if you need to maintain its freshness for extended periods. All
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