Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce

Royal Purple Max-Clean exceeded my expectations! Great price online compared to my local auto parts store, and the performance is impressive. My engine feels smoother, throttle response improved, and it’s reassuring knowing it cleans and stabilizes the fuel system. Excellent value for a high-quality product I’ll definitely keep using.

This has been working fantastic in my 05 Magnum. I use it every fill up. Increased fuel economy and better performance.

I've never had a lot of faith in fuel additives, usually dump them in, and forgot I did it, never noticing an improvement. Not the case with the Royal Purple Max-Clean additive. I had just changed the spark plugs in my 1987 Chevy El Camino with a 4.3L TBI engine. I took the vehicle for a drive, and it was fine until I stopped, and so did the engine. Quickly I restarted the engine, but it was idling rough, and the rpm was low. Once off idle it seemed fine. I thought possibly I had a vacuum hose come loose, so I rechecked and all was fine. I then thought maybe the EGR was sticking open at idle due to a piece of carbon, but there hadn't been a code set. I decided to try the easiest thing first, and added Royal Purple Max-clean to the fuel. In less than 100 miles I noticed the difference, and after a 150 mile trip it was running great, and idle was back to normal. Don't know for certain, it could have been one of the injectors was dirty, but all is back in order now. I would recommend this additive to others, it certainly worked for me.

Royal Purple max clean is easy to use, it is very effective at getting your whole internal engine very clean, this has ingredients in it that will clean your injectors and help you get better gas mileage to boot. I will be putting Royal Max Clean in my old Silverado every 5000 miles!

My family and I have been using Royal Purple Max Clean Synthetic Fuel System Cleaner & Stabilizer for about two years now, and it works great. My brother, who is very mechanically inclined, recommended it to me — and he hasn’t steered me wrong yet! The product itself does exactly what it claims, and we’ve been very happy with the results. My only complaint isn’t about the product, but about Amazon’s shipping. The first bottle I received was missing the funnel that is supposed to come attached, which meant I had to send it back and wait for a replacement. For that inconvenience, I’m giving four stars instead of five. Other than that, this is an excellent product, and I would absolutely recommend it.

One of the best cleaners Ive used for injectors, gives better gas mileage and powerfully cleaning your fuel system

I purchased a 20 oz can of this at AutoZone ($18.99 + tax). I used the can with Sunoco Super Unleaded gas in my 2019 F-150 with the V-8 engine. I then travelled from VA to GA (8 hour drive) and I definitely noticed a difference. Pick up to merge onto the highway and passing other vehicles was a lot better and I logged 20.2 miles per gallon, which is at least an improvement of 2 MPG. My truck also idled so great that you wouldn’t even think it was running. Highly recommend this product!

I have used Royal Purple MAX-Clean fuel system cleaner for several years and feel it is doing a great job on my direct injection vehicles. To use it you run your tank down towards empty, pour in the product and then gas up to say 15 or 20 gallons to get the right solution concentration and then drive your car for some distance. I time it to use the product before a trip and run the entire tank through. So far so good, my engine purrs!

Es el producto tal cual lo solicité, aunque tardo un poco en llegar, el Royal Purple Max Clean me satisface tenerlo, ahora a probarlo.

This is most likely the best fuel additive I have ever used as far as actual real-world improvement in fuel consumption. I have a 10 years old diesel vehicle which has been slowly increasing in fuel consumption, so I purchased this item. I added the content into the fuel tank when there was about 1/4 a tank left and let it run down until as far as I was willing (about 50km left in the tank). The next fill up, I did not notice a very noticeable change, but from the next tank on, I have been getting 50-70km more out of each tank of fuel. For reference, my tank is 65L and I've been getting about 740km out of a tank. I generally do a lot of hilly 60km/h drive (50%). a little bit of town driving (probably about 20%) and a little bit of highway (20-30%). Now, after the treatment, using the same fuel, same driving pattern, I am getting approximately 800km out of a tank on average. I think I might buy another one and treat it again. It'll probably clean the system further and give me better results.

seems to be working.Royal purple makes a great oil that is expensive but cleans your engine as it drives.keeps the carbon down.Seems like the purple coloured injector cleaner works too.I used it to do a piston soak for stuck rings full of carbon.Engine runs better.

息つぎが改善され吹け上がりが良くなった。 アイドリングが少し安定してる。 キャブ車におすすめです♪

This product gave me 11% extra mileage but it didn't remove check engine light.