Liqui Moly 2030 Pro-Line Fuel System Cleaner: Keep Your Vehicle's Fuel System Running Smoothly

Alaa Amer: I use it twice a year for my BMW E90

Canada on Nov 14, 2023

j: Daughter's Gen 3 4runner runs amazing now thanks to this super easy diy fuel system cleaner! We have tried several products from this brand and are so impressed with the results!! I waited a few months before leaving a review and still can not believe how well this stuff works and so far no side effects or return of previous issues. Liquimoly rules!

United States on Nov 03, 2023

GG92: So this stuff is pure gold. I have a 428i N26 (Sulev) engine and was getting a intermittent misfire only on cylinder one at idle and would do it every 25-45 seconds but you could clearly feel it. it was rare to feel it while full throttle but on super hot days you could feel it. I had bought 4 new injectors from bosch and was getting ready to do it when I remembered Liqui Moly had the pro-line fuel system cleaner so I thought what the heck, why not try it out before I cant return the injectors.

NOT even 100 miles after adding this to the tank and using shell 93 (only fuel I have ever used in the 30k miles I have owned it) all symptoms were gone and the car drives like new! Ended up returning the injectors and have not had an issue for the last 1k'ish miles.

Yes everyone will think it was spark plugs or ignition coils, but I already replaced those at 45k with OE NGK iridiums and Delphi 3 white loomed coils.

200/10 recommend to any BMW owner, and all other products in the liqui moly lineup :)

United States on Oct 20, 2023

Rodney: good quality

United States on Oct 20, 2023

Jimmy: I was prepared to be disappointed but there is no doubt this stuff works. My car is driving better than it has in years. Recommended.

United States on Aug 28, 2023

R: Car is running much smoother
Great quality

Canada on Jun 08, 2023

Kartag: Just kidding, in fact a saw a change in performance, and mainly the idle have drop significantly, VERY GOOD PRODUCT, I recommand it.

Canada on Apr 20, 2023

Rhaspun: 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.

United States on Apr 13, 2023

Sid: I have to admit! I’m hating this! 🤣🤣
I have a C-Klass that used to make AMG noise, I poor the bool, fill up my tank 2 things happened:
1- the car now purrs like a cat, engine runs smooth, even the gears (completely unrelated) but they shift nicely now! 😍😍
2- usually the trip from the gas station to my house the gas level moves from full and starts going down a bit! This time I had some groceries to do so i didn’t come home right after putting gas: the needle is still on full!!! 😱😱😱
Love this product, my oil change is due in few weeks I’ll get the pan cleaner before doing that!
Liqui Molly is amazing I always use their 5W30 oil

Canada on Aug 21, 2022

Tony Wang: I've been using the engine flush for a while now. Mostly because my car has been through a lot. And while I haven't pried a part the engine after a flush, I can say that the flush is doing something. There seems to be sharper throttle response after my first time use and things seem to be ticking a bit better in the engine itself. But Im not going to blow it out of proportion. I will say that I used this engine flush mainly because I know that in my car's 140k km lifespan, that has never been done. So I thought it couldn't hurt. But even then, whatever gains I experienced was minimal. And between the engine flush, fuel line flush and anti-friction modification, I only saw minimum improvements to fuel economy and power. SO take that how you will. I did think I flushed some crud out of my engine though as the fuel change that took place was especially murky. Regardless be careful of some of the fanatics here. I don't think doing a flush will hurt (unless your engine is incredibly incredibly old and gunky, in which case a flush may actually dislodge gunk and plug up holes vital for engine oil circulation) but just be-careful when doing it. You can actually run the risk of making your...

Canada on Oct 08, 2018