Liqui Moly2030 Pro-Line Gasoline System Cleaner, 500 ml, 16.91 Fl Oz (Pack of 1)

I’ve now used LIQUI MOLY Gasoline System Cleaner on all three of my cars with over 80,000 -170,000 miles—and the results speak for themselves. I have a 2004 Mercedes ML350, a 2012 Hyundai Elantra Limited, and a 2016 Lexus RX350. This product has helped each one run more smoothly and efficiently, even at their age and mileage.Mercedes-Benz ML350 (W163):With a high-mileage V6, this SUV had started feeling a bit sluggish—especially on cold starts and uphill acceleration. After using this cleaner, the throttle response improved noticeably, and the idle became more stable. It didn’t suddenly turn into a new engine, but it definitely felt less bogged down and more responsive, especially at low RPMs.Hyundai Elantra Limited (2012):This car showed the most fuel economy improvement. Before use, I averaged 25–27 MPG. After running a full tank with LIQUI MOLY, it bumped up to around 30 MPG, and the engine felt smoother under load. It’s a small gain, but for a daily driver with over 86k miles, that kind of improvement adds up over time.Lexus RX350 (2016):This engine was already running well, but I use the cleaner bi-annually as preventive maintenance. I noticed slightly better responsiveness when accelerating, especially from a stop. It’s subtle but definitely there. I believe using this regularly helps prevent future build-up and keeps things running optimally.Important Note:These products aren’t magic potions that make your car run like new—but they do help clean and restore your fuel system over time. I use it as part of my bi-annual maintenance schedule. Combined with using high-quality gasoline and regular servicing, this cleaner helps keep all three of my high-mileage cars running smoothly and reliably.Bottom Line:LIQUI MOLY is a well-engineered, trusted brand, and this cleaner has proven itself across three different engines. I highly recommend it—especially if your car has 100,000+ miles. It’s affordable, easy to use (just pour it in before filling up), and makes a real difference when used consistently.

We sell the standard version at my p/t job, but I had read this was better, so I gave it a try. Our 9 year old Pathfinder was experiencing a bit of hesitation even after changing the plugs and coil packs; having around 140,000 miles I decided to try a high quality fuel treatment as the last step. I added to 17 gallons of fuel and it was running perfectly within a few days! I can definitely recommend this to anyone as part of their maintenance routine!

The bottle is simple to pour and one container treats a full tank. Used it as routine maintenance and had no issues during or after use. The car seems to run smoothly, but it's hard to tell how much of a difference it made after just one treatment.Nice to have as part of regular fuel system care, especially since it’s from a trusted brand. May need repeated use to really notice long-term benefits

Works great I’ve never felt my truck run this smooth and accelerate so easily I’ve honestly had to get used to easing off the gas since using this.

Got this to pour into my 2003 Honda element which is at almost 200k miles. Heard good things about this product. And the fact that it’s worth pouring into a car with higher miles.Really easy to use and quick.

I can't fully dump all the content to the gas tank of car, quite some remains in the can. Easy to use, I just pour the content into half tank of gas then refill the tank, my 20 years old car runs slightly better after using it. Poor(or no) manual printed on the can, just couple of words in the website.

Funciona bien, mi vehículo Cambio un 100%

Perfect for German cars.