Gumout 510013W-6PK Fuel System Cleaner, 6 Pack

The Gumout Fuel System Cleaner is fantastic! I’ve used it in my car, and it really made a noticeable difference in engine performance. The cleaner helps reduce engine knocking and improves fuel efficiency. It’s easy to use and the 6-pack offers great value, ensuring I always have some on hand for regular maintenance. Definitely a must-have for anyone looking to keep their vehicle running smoothly. Highly recommend!

works!!!

Gumout gets the gumout. If you know, you know.

Good

Smooth out idle and better response.

two thumbs up.. when traveling it helps with strange gas.. worked for me, helped to run smoother and did actually boost the gas mileage about 1 / 2 mpg pretty impressive

Works great

My check engine light came on and the code was for fuel injectors to be cleaned. Well don't have thousands to have it done professionally. A mechanic friend suggested I use a pour in liquid to clean them. He didn't suggest which one so I read all of the reviews. This one had the best so far. I did not follow the instructions exactly just poured it into my gas tank and drove around. I will tell you not only did the light go out buy my 2006 car (it's now 2025) has it's pep back. I love the power it now has. I also love that I have 6 bottles which will last me quite a while since I don't drive a lot these days. I highly recommend these if you have an old car which doesn't seem to have the pep it used to have!