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.

Great product works very well

I used this in an ultra sonic cleaner to clean injectors. It worked amazing. I did a pre and post injector fire and they improved significantly

Purchased this Fuel System Cleaner with a dual purpose: to clean the fuel system to clean the catalytic converters on my Jeep after a repair work, as one converter was contaminated with a coolant-oil-soot mix after a Cylinder Head GASKET failure. Used : about 2/3 of the can in the fuel tank (less than 1/2 full) of the Jeep and the remaining 1/3 of the can in the fuel tank (less than 1/2 full) of one small older car, with engine hesitations after startup. Drove each one of them for a few days in a row, until tank empty. Didn't take long driving to notice a smooth change for the better and more responsiveness to the accelerator pedal. It was like the engine was running better day after day after day. Note: Best to do it is to take the vehicle for a longer highway drive, with the engine and the catalytic converters fully warmed up, so that the Cleaner can properly work its magic. Ever since, either vehicle feels like it wants "to fly" (aka: drive faster and faster). Definitely I will recommend this product to my friends and neighbors. And definitely it is well worth trying it, before going for expensive diagnostics and repairs.

I used both: Liqui Moly 2030 Pro-Line Gasoline System Cleaner And Liqui Moly Pro-Line Engine Flush To give my 2019 Jeep Cherokee Altitude 3.2L AWD a liquid reboost at 90k miles. I do rideshare and was getting about 17mph between city and highway. I have used good oil and changed it on time for the life of the SUV. However the last 2 oil changes I used liquid Moly Oil aswell. Anyways, its been about 4k miles since the change and i just noticed my mpg changed. Im getting 22mpg!!! Thats an increase of 5mpg...... Thats insane. Ive had this Jeep from when it had 112 miles on it. I gonestly cant remember having better fuel efficiency. Anyways I highly recommend Liquid Moly products.

I used this in 2001 CLK55 AMG. It was rough at times. I scanned the car and it showed that the 02 sensors weren’t warming up properly. The check engine light wasn’t coming on but it was flagged as a pending code. I tried out this cleaner and it seems to have cleared up the rough running. For that I give five stars. I took one start for poor packaging. It was in a bubble wrap bag and the can was dented from handling. I almost couldn’t pull the plastic tab off because the entire cap would come off. The metal container was distorted from being dented. The cap was close to popping off the can and the liquid would have came out of the can.

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.

Listen, I’m not one to leave reviews. I don’t bother doing it. However, I am so impressed with this product that I have to tell somebody. I just purchased a 2024 Palisade. I’ve been getting pretty good gas mileage averaging around 24 miles per gallon. I wanted to take good care of this vehicle and try to get to last as long as possible. So after 40,000 miles I put one can of this fuel conditioner. And I left my house and I drove 20 miles. Unbelievably my gas mileage increased 6 miles per gallon! Can you believe this? It happened to me and I can’t hardly believe it. Anyway, like I said, I’m really impressed with this and I will use it often. If it works is good for you as it does for me then this is worth every single penny to use it regularly.

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

Liquid molybdenum was a good product