2030 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.

Works great. The bottle is easy open, the spout included makes it easy and quick to put in. The smell of it is ok, not too bad. Came in a baggy away from the other products shipped with it. They really made it simple to use, the aluminum can feel of the bottle its in feels nostalgic and durable. The product pours in clean, thanks to the funnel/spout. Makes easy work out of it when pouring it into your tank.

Great quality special for European cars

This does a very good job of restoring performance in direct fuel injection cars with high mileage. I highly recommend this for gasoline engines.

Good product. It works!

All Moly products is the best

I have a 2021 Ford F-150 with the 3.5L Twin Turbo engine and over 100,000 miles. Recently, the truck just wasn't running as smoothly as it used to—the idle was a bit rough and the overall performance felt slightly off. I decided to try the Liqui Moly Pro-Line 2030 because it's a stronger professional formula. I poured it into the tank, and within about a week of driving, I noticed a clear difference. The rough idle smoothed out significantly, and the engine performance feels much tighter and responsive again. If you have a turbo truck hitting higher mileage, I highly recommend this over the cheaper additives. It definitely did the job for me.

I use Liqui Moly once a year to help keep my injectors functioning properly. So far so good. I also clean the MAF sensor if I see a drop in mpg's.

Mejoró el consumo de combustible (tampoco es algo radical, pero definitivamente ayudó), la reacción al acelerar mejoró notablemente aparte de que de repente el coche al estar parado sufría de variaciones en las revoluciones y esto se corrigió. Bastante satisfecho con los resultados, siempre había tenido mis reservas al respecto de este tipo de productos; este en específico 👏

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Seriously, this product works. I have a G63 that was not performing how it should in terms of responsiveness to accelaleration but once I used this I noticed a crazy surge in accelaleration compared to before using the product. I trust this company as I have used two other products from them and they all work. Couldnt be happier with the purchase.

excellent item engine run smoother and less emissions

Wow. Amazing product. I have Honda Civic touring. It work very well. After around 10-15 km only I feel that different. Highly recommend this Product. Engine very smooth running.