Rislone 4700 Hy-per Fuel Complete Fuel System Cleaner, 16.9 oz.

I been using this for years it works great. You feel the difference almost instantly I highly recommend it.

I purchased this product a couple of times now and I'm really pleased with its quality that it brings to my gas mileage and the smoother my engine sounds. I've used other treatments that were lower in cost which are considered good however this product is a bit pricey to be purchasing too often regardless of its performance which is great. I would prefer this product overall when it comes to performance, functionality, as well as speed just can't really see purchasing too much. I do still have leaks but products can only do so much depending the problem

It does work for a temporary fix. Price wise is very inexpensive against other brand products that are 30 to 40 dollars or even 50 dollars that guarantee passing emission results. If you use this product for every 5 -10 full fuel tank period or more, I can say you can extend your catalytic converter life, a system with a smooth riding & less noise under the hood. If it is every 2 fuel fill up, you will need a new catalytic converter. I have used it on my vehicles the last year and mileage increase has been noted.

This is a fuel system cleaning solution that is designed for the full bottle to be used in a full sized fuel tank. This comes with a funnel attachment that goes on the top of the container after you remove the cap. I noticed that using the funnel attachment makes it pretty much impossible to not empty the full contents of the container into the gas tank. Thus, I wish they had just included a non-attaching funnel with a wider top or sold a funnel separately for those who might need one. The formula itself seems fine, as effective as other fuel system additives I have tried.

I use this every oil change. Keeps vehicles running smooth.

Wow! My 2018 RX 350L was running kind of sluggish and was getting worse. I watched several videos on fuel cleaners and Rislone was always in the top three. It was more expensive than the others by far. But considering replacing the fuel injectors would cost $1000 and probably more for my car I decided to pay the $13. And wow, I could tell the difference in acceleration in the first mile! After 15 miles I had no sluggish acceleration at all. I have only driven 20 miles so far. So I expect the acceleration will get even better. I recommend it and will buy it again. UPDATE 1/22/2024: After driving 175 miles my car runs like new! My car has 53,000 miles on it. This stuff is great.

Good for your car

I've used Rislone products for years, in my Nissan, Jeep, 56 Chevy classic, & my Corvette 645hp muscle car classic from the past, & I have had nothing but good experiences with them. You can't go wrong with Rislone!

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Haven't seen any difference

Heard about it and tried it, was good no complaints.