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

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

Good product and used in all our vehichles

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.

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.

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

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.

My 4 cylinder car has 117,000 miles. It was running okay, but it had a lost little bit of zip. I added this product into my "almost empty" gas tank. After driving for maybe 10 miles, I then filled the tank. I didn't notice an immediate improvement. But after driving for maybe 100 miles, I can honestly say that my car seems to have more power now. When I need to accelerate quickly, it takes off like it did when it was newer. This stuff seems to work.

Review is for:Rislone Hy-per Fuel Complete Fuel System Cleaner Gas8 y/o vehicle felt like sluggish acceleration (especially uphill under light load) but otherwise running fine and recently serviced. Figured the price was right and would give product a shot in a full tank of gas. Reset trip meter to accurately check MPG. Acceleration seemed to improve slightly, but MPGs went down measurably. Things back to previous state after a few hundred miles.TLDR; Would not buy this again unless I was driving a much older and less maintained vehicle.