The lifespan of diesel in storage, like any fuel, is highly dependent on the conditions it is stored in. Diesel stored in an allocated plastic container that receives correct maintenance will generally last for between six and twelve months, so long as it is kept relatively cool, and completely dry – that is, water is not allowed to leak into the container. In order to extend diesel’s lifespan past this in storage, stabilisers are generally used.
The information above applies to diesel fuel only, not biodiesel or blends.
Dedicated diesel fuel storage units, both steel and plastic, can be found in the diesel section of RPM Fuels’ website.