K&N Performance+ Fuel System Cleaner: Restores Performance and Acceleration, 16 Ounce Bottle Treats up to 21 Gallons, 99-2050 , Black

If you’re wanting the quick review: Great Additive, Does work, Makes a difference, It’s only 7 dollars, Perhaps it’ll even make you go vroom vroom faster.If you’re wanting the long review:I would take a star off due to the incorrect delivery date being given, but it was through Amazon so it doesn’t really matter as it’s a big company, but overall, the additive is great. I waited until I was approximately 1-2 gallons in my tank, close to E. I put it into my tank with another additive and I feel as if I cannot mention it as it will seem like advertisement. So I put the whole bottle in before I filled my tank up to about a quarter with 93 from shell since they add detergents to their fuels(Exxon does the same) to try and clean up the fuel system better (In my theory. I’m not an expert nor advising you what to do, I’m just explaining how I used it!) from word, it’s better when you are taking a decent trip 20-30 mins/ miles on a highway with less frequent stopping. Immediately after adding the K&N and letting it kick in I could notice a difference. My ride was smooth and had more responsiveness to it as advertised on the bottle. It was a fun drive to say the least as I have a stock challenger(sxt, (R/T and SRT’s don’t hate on me it’s paid off, I’m young, cheap on the insurance as it’s in my name )).In conclusion, if you’re noticing sluggishness and decreased performance on your car, no matter the make, model, it is a great start to spend 3-10 dollars instead of going to the dealership and forking over much more than you’d like and even then, if it didn’t fix the problem, you’ll have a cleaner system after they fix the issue so at least it isn’t a total loss.

So far so good. I noticed the increase in power within a couple of days, but i did drive 80 miles on a road trip on the first dayHaven’t checked out honestly paid attention to the mileage but I’m sure that went up as well

The K&N Performance+ Fuel System Cleaner promises to restore performance and acceleration by removing carbon buildup in your fuel system.Improved performance and acceleration: Many users report experiencing smoother operation, increased responsiveness, and even slightly improved fuel economy after using this product.Easy to use: Simply add the cleaner to your gas tank before filling up.Affordable: Compared to professional fuel system cleaning services, this product is a budget-friendly option.Wide compatibility: Works with most gasoline-powered vehicles, including direct and traditional fuel systems

UPDATE: For current best price, I have switched to Lucas Oil 10013 Fuel Treatment - 1 Gallon.END UPDATE.Really liked that the cap removed easily, and that the neck fits well in my narrow unleaded fuel nozzle.Now that the price is $12, I will go back to Berryman B12 at $4.01 until this is back to $6. If it does not go down in the next few months, cancel subscription.I like K & N and the fact they started in my neighborhood in a house converted to business building on North main st. Never really bought into the oiled filters for motorcycles as they get too compacted to fully clean and then don't have as much flow as easy to clean small cell oiled foam. Further concerned reading reviews on their Home AC filters restricting flow so much they damage systems, causing thousands in wasted expenses.That said, I am not certain of any treatment being really useful, just was impressed by VGG dumping a couple of cans of B12 into a POS rust bucket and driving 500 or more miles home. That alone is my purchasing impetus, and why I lean toward B12 as something that possibly helps.

Great product

First I bought two bottles, one for my wife's car and one for my SUV.She drives Mercedes S Class, 2020 with 65,000 miles on it. I put one bottle in her car and I forgot about it.Two days later she calls me and asked me what I did to her car ?? Even she noticed the difference.When she came home I took her car for a spin and the difference in driving was big. The engine was much peppier and smoother working. Then I read what was written on the bottle and it said "For best result use two bottles". So I used second bottle on her car and ordered me two bottles for my Chevy Tahoe.My Tahoe is 2015 with 95,000 miles on it. Bottles arrived and already after first tank I could see the huge difference in the engine performance. The difference is like something was clogged in the engine before and now this engine is like new and it has much better pick up.I have no idea what this thing does, but let me tell you, if my wife can spot the difference on her engine before and after the treatment, rest assured that this thing works. Not only does it work, but the difference is so great that anyone could feel it. Go for it and make sure you buy two bottles for two tank treatments. From now on I will be using this once per year in every vehicle that I have.

I purchased the K&N Fuel System Cleaner to smooth out a slightly rough idle at start up. Simply add it to your next tank of gas and drive normally. I do notice that the idle did smooth out and hope that it's not my imagination. K&N recommends a follow up application after the first but I seem to already notice a difference that I am satisfied with. Good product thus far.

It works great, but why has it DOUBLED in price in the last 8-9 months????5 stars for the product1 star for the price increase