LX4 Lubricity Extreme Fuel Additive, 1 Gallon

I’ve been running this LX4 Lubricity Extreme in my F-250 and it’s a total peace of mind. I actually mix it with the Hot Shot’s Secret fuel additive (EDT), and the combination works flawlessly. ​The engine runs incredibly smooth and quiet. Since today's diesel fuel can be "dry," adding this extra lubrication is a must to protect the injectors and the fuel pump from wear. You can tell the truck likes it—the throttle response is crisp and it just feels more efficient. If you want to extend the life of your fuel system, this is the perfect add-on. Great stuff!

I use this in all my diesel trucks and equipment never had a fuel issue

Good stuff and a must for diesel owners

I purchased this for my 6.7L PS, to help keep the fuel system lubed and running well. I have used this on other diesels with great results; hope it keeps this one going as well.

I must say that I up keep my Explorer in everyway, oils changes on time religiously, coolant flush on time, all scheduled maintenance done on time, but I drive a lot of miles, 124 miles Monday through Friday, more when I have to pick up my daughter. So the wear and tear happens no matter the upkeep. Lately I've felt the car somewhat sluggish and I happen to fall upon this and read what it offers and decided to give it a shot based on the reviews. I must say that the difference was night and day, the car became more quiet, drove smoother, enhanced performance on the highway, it was a real noticeable difference. It just felt so much better when I put my foot on the pedal. Now with that said, I really didn't noticed better MPG, and maybe that was because I upkeep and baby this car. This was very simple to use, simply use 2 oz per fill up, you squeeze the bottle and it has a 1 ounce fill cup on the top of the bottle which is beyond helpful to make sure that you do not over use. I've driven over 2k miles since using this and I can assure you that it will not be a major part of my upkeep.

Purchase this item through independent test and studies that showed it to work. I can only assume it's doing its job. My truck idles and runs smooth and starts up great when cold.

My 2001 Silverado HD has a 100% stock 6.6L LB7 turbo diesel, manufactured before ULSD regulations were promulgated for the United States in year 2007. For years, my engine has had an idle lope, and which recently upon fill up at a Chevron-branded station became more pronounced and was accompanied with a steady blue smoke plume from the exhaust. I suspected that the fuel pressure regulator was not moving smoothly enough and causing the fuel rail pressure to bounce around outside of target values. Since ULSD does not have the lubrication properties of pre-ULSD fuel, I wanted to try a lubricity additive, beyond the Power Service Diesel Kleen I have used since day 1. So I bought a bottle of this Hot Shot's Secret LX4 Lubricity Extreme, and added 5 ounces to my 34 gallon fuel tank that was full. I allowed it to sit overnight, and ran the truck in park for 10 minutes the first day, then let it soak again overnight. I ran it again for 10 minutes the next day in park, and let it sit overnight. The third day I drove it. The surge was totally gone and replaced with a beautiful smooth steady idle, and the blue tailpipe smoke was also gone. The exhaust from the tailpipe is now totally invisible. It's my belief that the pre-2007 Duramax engines were not engineered for the lower lubricity of modern diesel fuel, and for me, this has product is a huge blessing. (I do think the major fuel manufacturers like Chevron are meeting formal lubricity standards, but not to the lubricity level that the Duramax design engineers had in mind in earlier years pre-2007). Unless something changes, I'll use it from now on in my Silverado. Terry Livingston, Mobile, AL

Gives a great boost to fuel economy.

Arrived quickly thanks.

Très bon produit

Smooth! Please monitor your motor oil level closely the first few fill-ups. If it increases above the max dot, lower the treat rate.

It improved my fuel mileage by 2I/100km All the way down to 5.9I/100km from 8I/100km Also the engine is extremely smooth and quiet now. When I start my 2017 Subaru outback it used to be more slow turning over and now you can hear that there's no resistance and turning over faster.

Great product, noticeable increase in fuel economy!