In our quest for the best diesel fuel additives, we recently put Hot Shot's Secret Everyday Diesel Treatment to the test. This 6-in-1 powerhouse promises to tackle everything from injector cleaning to cetane boosting, all while treating up to 400 gallons of diesel. We were intrigued by its versatility and efficiency. After using it in our vehicles, we noticed a marked improvement in engine performance and fuel economy. The injector cleaner function seemed to work wonders, leading to smoother operation and less engine noise. The 16oz bottle is a convenient size, making it easy to store and handle during our regular maintenance routines. Overall, our experience with Hot Shot's Secret EDT has been positive, and it's clear why it earns a spot on our list of top diesel fuel additives.