STA-BIL Marine Tune-Up Fuel Treatment, 8 oz

I have been using this product for two years now with great results. I use it in my boat, lawn mower, snow blower, and all my small engines. My push mower used to start racing on its own but after using the treatment it returned to normal. Have not had issues with any of my small engines since using it. I recommend this product to anyone who has gas engines to keep them performing well.

Used this to improve 2 year old gas in my boat. Initially the engine (Vovlo Penta 4.3 GX-i) wouldn't run above 3000 RPM but within 20 minutes it was running at full 5000 RPM. No knocking or bad engine sounds despite the old gas. I did also add some octane booster as well. Just as a note, I did use marine fuel stabilizer when I the boat was last fueled 2 years ago. Used half a tank and then added fresh gas and another bottle of the tune up treatment. The engine continues to run strong.

I used the whole bottle in 1/2 tank of questionable gasoline from used boat from dealership, with no idea what mixture of gas water and particulates was in the gas tank in this 12 year old boat. The dealer started up the boat, and it was taking a minute to get the idle going. He mentioned that the gas was a few months old, but I am guessing that is was more like 6 months old. This is the TKS engine, self priming. I think some water / condensate was in the tank. Before taking out to first trip, I added bottle and 5 gallons fresh gas. That trip to the lake, I still has some issues getting it to start easily. Ran OK, not great that day, went home, changed cap and rotor and wires. Next trip, 1 week later, the 3.0L started great, ran great, I am not sure if it took some hours to fully mix and interact with the old gas, neutralize the water, and perform it's reactions, before it made existing gas more combustible, but that is what it seemed like to me. ***UPDATE**** - I had strange fuel issues the next season after using this product. I had to replace the fuel pump and many other fuel delivery components including the carburetor. Not sure if this contributed to the fuel system failing, the long term effects outweigh the short term gains.

I got a Husquvarna YTH 24V48 mower from a friend who said it wasn't runnig right.He gave it to me as he got a different mower. I put in new plugs and chaged the oil and filter, sometimes it would run fine then sputter and lose power. I suspected the carb was clogged and gave this product a try. In less than 10 mins. it was running like new. Amazing product, I was not sure if this would help but it really did fix my issue.

My 3.0 MerCruiser stern drive was hard starting and would not hold at idle and ran really rough under load. I put 2 cans of S*Foam Marine through the tank and replaced the fuel filter and the spark plugs. With only a slight improvement I decided to bring it to my dealer. They replaced the distributer cap, rotor and plug wires and sent me on my way. The idle was good, but under load (headway speed) it ran really rough. Brought it back and they swapped out the carburetor and lake tested it. Back at home it ran great for a one-hour ride. A week later I tried to start it and the idle was bad again (engine shaking, erratic RPM). Almost dragged it back to the dealer but thought I would try this first. Per instructions I added this to about 15 gallons already in the boat and then topped it off with 5 gallons of fresh gas. Let it idle at about 1500 RPMs for 15 minutes and WOW, it's purring like a kitten. Next time, this will be my first resort!

Easy to add to your boat gas tank

Great product. Great price. Costs double at most retail stores. I use it for fuel in Bass Boat, Harley + all lawn cutting fuel for motors.

Works great. I've had less trouble , mosty excellent performance with my small power tools and yard equipment since I've been using this and other Stay bil products.

Easy to apply and worked great

Treats fuel.

Great stuff!