Rislone4700 Hy-per Fuel Complete Fuel System Cleaner, 16.9 oz.

I drive a 2010 car with about 120k on it. This, along with regular general maintenance, helps keep the older engine clean and running well. I found thisnseems tonwork better for my car than other similar products. I add it to a full tank of gas ever 1k miles or so.

Been using this product for for several years and have noticed my vehicles engines running smoother. I also only buy High Tier gasoline.My brother n law has used this product longer than I and swears it helps boost his engine’s performance.

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.

the best fuel injector cleaner, can sometimes even turn off a check engine light if it’s the right code.

Easy install. Helps fuel mileage

The product is economical and I cannot see inside my engine, BUT it helps clean the engine from the inside and doesn't interfere with performance, too. This is a stabilizer similar to what all the gasoline companies add to their product, but more concentrated, too, so it does help. I'd recommend you use it once every month or two - I have added it more than once to assure the carbon is cleaned. Moreover, there are leak stopping products for transmissions, engines and coolant - these are economical and the products work most of the time eliminating leaks and swelling the seals, etc. GO FOR IT!!!!

I can tell a difference every time I use. Great results while using on four different car brands.

Felt the changes about 100 miles in after topping off. Will continue to use as needed.