The assumption has long been that diesel is dying out, which means less and less automotive brands are producing products for diesel engines. Diesel-specific fuel additives are becoming increasingly scarce, but today I want to show you five great ones that won’t be going anywhere any time soon! What Are Fuel Additives and What Do They Do? There are a lot of products that fall under the fuel additive umbrella, but, for the most part, a fuel additive is something that is added to an engine in order to make its fuel in some way more effective or efficient. An octane booster, for example, will enhance the octane rating of a vehicle and reduce the risk of your diesel pre-igniting, thereby increasing fuel mileage. Octane boosters are almost exclusively used in performance cars and aren’t necessary for everyday engines. A lot of fuel additives are designed to maintain the engine rather than to increase the performance of your chosen fuel. As time wears on, your engine’s fuel injectors may become clogged by carbon deposits, which, more often than not, will lead to stalling, minimal acceleration, and a generally underwhelming performance. Other fuel additives that you may want to look into and experiment with over the coming weeks and months include upper cylinder lubricants and anti-gelling additives. How Do I Use a Fuel Additive? If you have recently purchased a new car, you should avoid using a fuel additive right away. It is generally a advised that you clock up a