Star Tron Ring Clean

Seems to work.

best quality carbon cleaner for marine motors. 16oz container and 1oz per 10 gallons. best to use on a routine basis to clean your cylinders and fuel system. highly recommended to use ethanol free gas with this too for ultimate engine protection

Was having trouble with my two-stroke outboard and could not get it to quit missing despite some new plugs and cleaning the optical ignition. This did the trick. I think two stroke mix had evaporated in the line and carb and left behind oil gunk. I got a couple of mph and revolutions on the top end and smoother idling on the low rpm. I used this in the first tank of the season to break the sludge and will use the concentrated blue bottle to keep the tank clean during the summer.

Fuel additive for keeping the rings free. Just as good as the very expensive Yamaha ring free but a 10th of the cost

I am a fan of the Star Tron gas additive. So thought I would try this product. I have a Toro Workman UTV that was getting hard to start and just not running as it should. I ran two tanks of gas with the recommended amount of the Star Tron Ring Clean + Deposit Control through the machine and noticed that it was starting like new and running smoothly. Now I use it in all of my boats, mowers, and 2-stroke yard implements. I am now a fan of this additive and use it together with the standard Star Tron gas additive (which is really well worth the money to keep gas from getting old and to control the bad things about ethanol gas). Next I will run a few tanks of this additive through my vehicles and see if it improves gas mileage. It takes very little of this product to see really good results!

This is the only fuel additive (of many) I have tried that actually improved the power and smoothness at idle of my vehicles. The first time I used it I could smell an obvious difference in the exhaust but have not smelled that since.

I have a 2023 Harley Tri-Glide. I use this in every tank. I have 10000 miles on it and the spark plugs still look new. I get 43MPG when I ride with the group. The photo of the rear intake valve has over 12000 miles on it.

I always use Star Tron ring clean plus in my 2003 Yamaha 115 hp four stroke outboard. Very happy with results. Engine has no hesitation, very responsive on throttle. I truly believe with a scheduled maintenance of oil changes and filters of your engine you can have longer life out your engine.

Great price on a great product

Worked great. Noticed a difference the first day I started using it. Runs smoother and feels like the vehicle has a bit more power.