Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle

I used the entire bottle over the span of a month. I tried the recommended ratio of product to gasoline and it did nothing. Then I tried to increase the ratio to make it stronger, eventually the check engine light turned off and on a few times. The last time it stayed off for 2 weeks and eventually came back on permanently. This product is good to try if you are trying to pass inspection. It may or may not work, but even if it does, its only going ro be temporarily, don't expect the problem to go away.

Amazing product!!!! What a difference I saw after just a couple of weeks. It has now been months since I started using Fuel Ox and I couldn’t be happier with the results. Compared to all other additives I’ve used, this one is BY FAR the best- nothing else even comes close. I’m getting better MPG and fewer emissions, this stuff really cleaned out the entire fuel system in my truck! My brother is now using it as well and says his old car is running better than ever before. Really compact and convenient size too! Will definitely be buying again!!!!

It takes very small amount to feel the results in your engine. Over time ethanol may damage your vehicle. Fuel Ox has performed as advertised for both my 2002 GMC Sierra and my 2002 Chevrolet Tahoe. I will be purchasing more.

I use it in all my machines! I would highly recommend this product!Also talk to one of the owners who was very helpful in explaining his product!

Noticed no difference.

Ive never used a fuel additive but I tried Fuel Ox and was pretty surprised by the extra mileage I got. It a solid product. I recommend getting a bottle if you want your fuel to last longer. I actually called them because I had some questions and their representative answered my concerns. It’s good to know their are good companies out there who truly have the best interest of the consumer.

I can't say it was useless but i say no difference than using other products that are much cheaper

noticed a change in performance after 2 tanks of gas