Okay diesel truck owners, listen up - this Power Service Diesel 911 is like having an emergency kit for your fuel tank when winter really hits hard. This stuff is seriously powerful - it reliquefies gelled diesel fuel and de-ices frozen fuel filters to get your engine running again when cold weather has everything locked up. Now here's the important part - this is for emergency use only, it doesn't prevent gelling from happening. For that, you'll want their Diesel Fuel Supplement +Cetane Boost (the one in the white bottle). But when you're already stuck with gelled fuel, this is your rescue solution. The 26-ounce bottles are the perfect size to treat a tank, and getting a 12-pack means you're set for multiple vehicles or multiple winters. What's really smart is that it contains Slickdiesel Lubricator to protect your fuel pumps and injectors from wear, plus it removes water and prevents fuel-filter icing. I've seen this stuff work miracles on trucks that wouldn't start in sub-zero temperatures - it literally dissolves the wax crystals that form in gelled diesel. The formula is compatible with their preventive product too, so you can use both together if needed. Having a case of this on hand during winter months is just smart planning - it can save you from expensive tow trucks and mechanic bills when the temperature drops unexpectedly. Whether you're running a fleet of work trucks or just want to protect your personal vehicle, Diesel 911 is one of those products that pays for itself the first time you need it.