Star Tron Enzyme Fuel Treatment Concentrate, 128 Fl. Oz. – Treats up to 2,048 Gallons – Rejuvenate & Stabilize Old Gasoline, Cure Ethanol Problems, Improve MPG, Reduce Emissions, Increase Horsepower

I have been using Stabil for years and thought I’d try this after reading all the reviews. I started with it on an old Poulan Pro 22” Lawnmower and after running a tank of treated gas through it ran a lot better. I moved up through chainsaws, weed eaters, pressure washers, generators, and finally my 2019 Subaru SUV. All ran better with the additive as I run 87 octane gas. I was most impressed with how it made my Subaru run like it had a tuneup done. Acceleration was better, MPG moved up from 27.9 to 28.9. That’s the best it’s ever been. I store about 20 gallons of Gas every Hurricane Season for my generator and treated it with this product last year 10/15/2024. Just tried some today 07/12/2025 in my generator and it fired right up and ran like it was new. Poured the other 15 gallons in my SUV and it runs great. Heading down to resupply my treated gas cans with fresh gas for the coming Season. I can recommend this product for your gas treatment.

This product works. I've used Star Tron Enzyme Fuel Treatment for well over ten years. I have never refueled my boat (115 Yamaha 2 stroke) without adding Star Tron Enzyme fuel treatment. I also use Star Tron in my (Honda) generator, pressure washer and lawn mower. Take my advice - only use non-ethanol fuel with Star Tron Enzyme Fuel Treatment. Terry

This works great! I have been using products from this company before they started offering this formula and have never experienced any issues with my equipment. Just add a little to the gas can before filling it at the gas station and never have to worry about it. Great for winter storage of my lawn equipment and motorcycles and summer storage for my snow blower. It's concentrated, so it goes a long way.

I would like to start off with the Pros of this product- Has stopped the "ticking" sounds in my engine (do to the Ethanol gas).- Engine runs smoother, and acceleration has increased.- MPG has increased slightly.- Makes my lawn mower run smoother.- Make my trimmer run smoother.- It can be used in my car, lawn mower, and trimmer.Con: and the reason why I only gave it 4 starts- The bottle leaks every time you pour it. I have tried many different ways to put this product into my car without the bottle leaking (Measuring cup, funnel, eye dropper to measure the product out without having to pour from the bottle [which takes time]). However, no matter what I've tried, the bottle continues to leak. I am still looking to find other ways to retrieve the product from this bottle without having it leak. I know for some this may be a trivial thing, but it does get quite annoying when trying to figure out a way to measure the ounces that you need to put in your car without the bottle leaking.I will continue to use this product because it does work. I'll just need to find a better way to measure out the product without it leaking.

Use this gas treatment for years, works well.

This stuff is amazing. I’ve used it for years on my boat and have been very satisfied. Also use it in my lawnmower and motorcycles keeps them starting up first. Try every time. Best to use a very small measuring device because it’s easy to use too much.

Starbrite fuel treatment has been used for years in my gas engines. From lawn mowers to snow blowers, it helps keep them trouble free each season. I've used other stabilizers but when I do, they end up running rough from fuel varnishing in the system. Doesn't happen with Starbrite concentrate. Us it according to the instructions and keep your equipment running trouble free.

Actually did what it said would do. Satisfied