Best Fuel Injector Cleaner Additives of 2025

"I've been using this product since the mid-2000s, and I've never had an issue. My generator sat for 9 months with this product, and it fired right up three weeks ago!"

"For over 10 years, I've relied on this for my mower, generator, pressure washer, and motorcycle. Everything starts and runs smoothly when I bring them back to life."

"I use this every time I fill up my boat to keep water contamination at bay. After several years of use, my fuel remains in top form every time."

"I've been using Lucas Oil Fuel Treatment for a few years now, particularly after every oil change. I switched from the 5.25-ounce version to the 1-quart size for better cost efficiency. The results are amazing; my MPG jumped from 30-31 to 36 after using it. This product has become essential in my maintenance routine, improving both fuel efficiency and overall vehicle performance."

"I add Lucas Fuel Treatment to every tank, starting with the quart size for convenience. Just 3-4 ounces per tank makes a noticeable difference of 1-2 MPG. I've noticed improved throttle response and engine smoothness, and even my family members have commented on the difference. It keeps the fuel system clean and enhances valve performance. I highly recommend it!"

"While I can't comment on the MPG increase, I use Lucas Fuel Treatment in all my machines, from my C8 Corvette to my boat. I find it to be a great upper cylinder lubricant, especially during heavy use. I combine it with SeaFoam Marine for optimal results. Since I started this regimen, I've had no fuel issues at all. Preventative maintenance is key with today's fuels!"

"I regularly use the Chevron Techron Concentrate Plus in my Kia Forte, and the results are impressive. It effectively cleans carbon deposits and keeps my engine running smoothly, which I appreciate during highway driving. I've also noticed an increase in fuel economy after each treatment, making it a worthwhile addition to my maintenance routine."

"After using this product based on a recommendation, I found that it significantly improved engine performance and fuel efficiency. Just adding it to a full tank of gas did the trick, and I felt the difference quickly. I’ll definitely continue using it and recommend it to others."

"I decided to try the Chevron Techron Concentrate Plus for my C6 Z06, and I'm really pleased with the outcome. It not only resolved my faulty fuel gauge issue but also enhanced engine responsiveness and power. I’m glad I opted for this cleaner before considering more drastic measures!"

"I added half a bottle to my almost empty tank with high octane gas in my Nissan Altima, and it’s running like new! The pickup has greatly improved!"

"Initially, I wasn't sure about the results, but after driving about 100 miles, I noticed my car had much more power. It accelerates quickly like it did when it was newer. This stuff definitely works!"

"I was dealing with a sluggish 2018 RX 350L, and after using Rislone, I felt a difference in acceleration within the first mile! After 175 miles, my car runs like new again. Highly recommend!"

"I was initially hesitant to buy a fuel additive, but my mechanic recommended Ferox for long-term maintenance. After using it for over a year, my car runs great! I appreciate that it's non-toxic and easy to use without plastic bottles."

"I discovered Ferox Fuel Tabs while searching for a solution to keep my engine clean. I was drawn to the product because it reduces plastic waste. After adding a tablet, I noticed my car runs smoother. I will definitely continue using it!"

"After hearing about Ferox from a friend, I decided to give it a try for my 18-year-old vehicle. After just a couple of fill-ups, I noticed a big difference: my car starts easily, runs smoother, and I'm filling up less often. It's incredibly easy to use, and I really appreciate the Made in the USA aspect!"

“I have a 2002 Chevrolet Silverado with a 5.3L engine, and after never cleaning the injectors, I saw a noticeable difference in performance and fuel economy with just two bottles. Highway MPG increased to almost 19.”

“My Prius had a major oil consumption issue at 250,000 miles. After a couple of bottles with Regane, my car now uses only 1/4 qt of oil after 25,000 miles.”

“I decided to try this Gumout fuel system cleaner on my 2004 Durango after months of a check engine light. To my surprise, after a few uses, the check engine light went off and the car runs better than ever! It’s like a miracle in a bottle!”

"I added this to my 2008 Acura TSX with 195K miles and noticed a huge difference in acceleration and MPGs right away. I'll definitely use Lucas on my other vehicles for maintenance."

"This package gives me the most bang for my buck. It starts with a concentrated cleaner and then provides three tanks of regular cleaner. This four-tank cycle keeps my fuel system running like new!"

"We use this in all our Ford Diesels. It really helps with gas mileage and makes the truck burn diesel better. My son was skeptical until we had him add it to every fill-up. You can really tell the difference when you skip it!"

"After using the ACDelco Fuel System Treatment in my C5 Corvette, I noticed my gas gauge is back to normal—it's amazing! I definitely recommend it for all types of vehicles."

"I added this product to my SUV's fuel tank because I was concerned about my estimated mileage. After a few trips, my mileage till empty improved significantly with each fill-up!"

"I bought this product to keep my Chevy 323 ci V8 in good shape, especially regarding fuel injection. The instructions were clear, and once I added it to my tank, I felt more confident about my engine’s cleanliness and performance."

"I've found that this product works even better than the much more expensive octane boosters I've tried. Although it's marketed as a fuel stabilizer, fuel treated with it feels like much higher octane fuel. In California, where we only get 91 octane pump gas, this has been a game changer for me!"

"This is a great product that keeps my gasoline clean and helps keep water out of the system. I believe it also boosts performance. I use it in all my smaller engines for lubrication and will definitely continue purchasing it!"

"I've experienced too many issues with old gas blocking carburetor passages due to fuel deterioration. This product is super concentrated, so just a little bit treats a whole lot of gas. I put treated gas in all my small engines, and I have no startup problems come spring."