How many fuel additives are on the US market?

As of now, there are thousands of fuel additives available on the U.S. market, including products from major companies and numerous smaller manufacturers. These additives serve various purposes, such as improving engine performance, cleaning fuel systems, and enhancing fuel stability. The exact number can fluctuate due to new product introductions and regulatory changes. However, it's important to note that not all fuel additives are equally effective or necessary for every vehicle.