Gumout 510014 Regane Complete Fuel System Cleaner, 6 oz. (Pack of 6)

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Works great does leak scent is fine, the durability of the bottle is on point, easy to use, and the the concentration is clear enough to see and use it’s great product and it does come with the PEA FORMULA if people read the bottle don’t listen to these people works great def will buy again and noticed a increase in mpg and also my check engine light went of after about 200 miles. Great product.

They did an extensive study on fuel system cleaners. Cleaners with PEA are the only ones that are effective. Gumout works great. Price is competitive, shipping was perfect. Great value.

Cars runs smoother on this. I've used througout the life of our 2016 outlander bought new and now has 80k miles on it. Hard to explain but i feel it works well . We get 32 to 40 mph with this outlander

I found a video by Scotty Kilmer, a popular YouTube automotive expert, where he tested this product on a car to see how well it works. In the video, he used a borescope to check the engine’s cylinders before and after running two full tanks of fuel treated with the product. The results were impressive: the cylinders looked much cleaner after using the additive, with clear reductions in carbon deposits and dirt. Scotty pointed out that this was an independent test, done without any sponsorship or outside influence, which meant the results were fair. Based on his findings and the manufacturer’s directions, I chose to use the product as instructed, adding it to my fuel tank to keep my engine running well and clean. The simple application and noticeable results make it a great addition to my vehicle maintenance routine, especially for keeping the fuel system and cylinders in good shape. I use it every 2 months (approx 3-4k miles) and my acceration and idle are like it came out of the factory.