Royal Purple Max-Clean Fuel System Cleaner & Stabilizer - 20 oz (6-Pack) | Improves Engine Performance, Cleans Injectors | Ideal for Cars, Trucks & Motorcycles

Saw this product recommended on a Scotty Kilmer YouTube video. We own a 2020 Chevy Suburban that was a prior daily rental. I've been noticing that the idle was rough immediately after coming to a stop from city and highway speeds. Gas mileage was also down from what I had been seeing right after we bought the vehicle. I had just filled the tank and driven home from work. I figured the 13 miles I had just driven would leave enough room in the tank for at least one bottle of the Royal Purple, but I was wrong. The 31 gallon tank only accepted about 3/4 of the can. We had to drive about 15 miles into the city and I planned to finish the bottle and add a second one when I got back home. When we got into the city I realized the engine was now running much smoother at the stop lights and signs. It was actually running as it should have been all along and the fuel economy is back up to almost 20 mpg. Thanks for the video recommending this product, Scotty Kilmer. This stuff just works. Oh, I never did add the second can. I plan to add it in another 5,000 miles, or sooner, if I notice the engine is idling roughly or fuel economy has dropped off.