The American Petroleum Institute recommends that you determine when DEF was put in the vehicle. The storage life of DEF is about 12 months in optimal conditions. If DEF has been stored in the vehicle over the past 12 months, it is recommended that it be drained and replaced. API also recommends changing the DEF if a vehicle sat unused in summer Diesel can sometimes last longer if stored correctly and treated with additives. We must be aware of fuel quality and take precautions in storing it. ‍ Key Takeaways. Diesel fuel lasts 18-24 months in your vehicle’s fuel tank if your car avoids extreme temperatures. Diesel fuel lasts for only 6-12 months on a shelf. Diesel Rule 3: Don't buy diesels for low mileage or inner city life. Also known as “ diesel car city driving ”, you want to avoid doing this. It’s well known by petrolheads, but always worth explaining why. Driving at low speeds and short distances clogs up your Diesel Particulate Filter (DPF) quickly. Using a car frequently so that the fuel will not stay in the tank for long. A short-distance drive around the street can aid the free flow of fuel. Avoid running the engine in a confined area or using a snow-jammed tailpipe, which may expose the driver to a dangerous quantity of carbon monoxide. Keeping the fuel tank full or at least one Thankfully, the amount of water in your diesel is almost always negligible. As well as having contaminated fuel, your car would need to sit stationary for a long time before any damage starts being done. Although water in diesel sounds terrible, and scientists have spent years trying to prevent it, it might not be. Since ultra low sulfur diesel (ULSD) has gained popularity, it has made fuel a lot more unstable, under the best conditions, it’s possible to store off-road diesel for a maximum of two to three years. One of the biggest threats to the long-term storage of off-road diesel is moisture. Given time, water in the form of condensation will form in However, in most cases, a single tank of DEF will last between 5000 to 6000 miles on the 6.7 Powerstroke . But if you want to get specific, you can actually calculate your average DEF requirements since DEF is usually consumed at a rate of 2-3% relative to the amount of diesel that you use. For example, on a long-bed Ford F350 with a 38-gallon Starting your car on kerosene can be a little tricky, but with the right approach, it can become a breeze. First, you need to ensure that the fuel system is clean and free from any impurities. This can be done by flushing the fuel tank and cleaning the carburetor. Once the fuel system is clean, pour the kerosene into the tank and start the engine. QHhhxDK.