A budget-friendly Diesel additive is the Howes Diesel Treatment, as a half gallon of it costs $14 from Amazon. Despite the lower price, it does mostly everything the other additives promise by preventing fuel injector deposits from forming. All of this is done to help prevent your parts from wearing out as fast as they would otherwise. This formula also promises to stop the diesel fuel from gelling up in the winter. What it doesn’t advertise is giving you better gas mileage, so this isn’t an additive you’d want to pick up if that’s what you’re looking for.
The user scores for the Howes Diesel Treatment are 4.7 out of five on Amazon, with over 1,900 reviews. With this one not promising to add gas mileage, the results are easier to see, and people do report back saying the fuel didn’t gel. Some people say the additive itself can freeze, however, so make sure you’re not leaving it out in sub-zero temperatures.
