Hot Shot's Secret EDT+ Winter Defense 32oz, 7-in-1 Anti-Gel Diesel Fuel Additive – Prevents Gelling, Protects Fuel System, Diesel Additive Improves Cold Starts, Boosts Cetane

I have had no issues with winter time running of diesel engines. Not sure if it does what all it claims, but I have no complaints and seems to do the trick. I had used PS and think it is a great product, but this seems to winterize just as well and should have other benefits along with the winterizer.

I have used this in my diesel truck and farm tractor and so far the temperature in my area was 10 degree and both started up with no problem. I am leaning towards this product working to prevent gelling up. I think it is worth a try id you have a diesel truck or tractor

By far the best fuel additive! Run the regular in the summer and this in the winter and I’ve noticed a substantial gain in fuel mileage!

Has worked well so far. Seems to be high quality and it easy to use.

My truck hasn’t gelled up this winter works amazing

Good stuff but diesels have become an expensive maintenance thing and I just got sick of it so I traded my truck in who wants to have to drain a water filter every month and a half lots of maintenance death fluid all that crap makes diesel’s just not worth it anymore unless you own a fleet

Easy to measure and the pour spout is long enough so you don't spill before getting into the tank

I’ve been using Hot Shot's Secret Everyday Diesel Treatment in my Ford F250, and I couldn’t be happier with the results! This treatment has made a noticeable difference in the performance of my truck. It helps improve fuel efficiency, reduces engine noise, and keeps the fuel system clean. My truck runs smoother, and I’ve noticed a slight improvement in acceleration. The 16-ounce squeeze bottle is super convenient and easy to use—just squeeze the right amount into the tank, and you're good to go. I love how it’s designed to be used with every fill-up, making it simple to maintain the health of my engine. Plus, it’s great for combating the harsh effects of diesel fuel, especially in colder weather. Overall, this is a must-have for any Ford F250 owner who wants to keep their truck running in top condition. It’s affordable, effective, and easy to use.