The product is amazing and it does what it says on the tin however keep on mind that if you have never used a QUALITY fuel cleaner before some things may happen. I'd you've only bought cheep cleaners (that don't work) you wont know what to expect. If there is years of carbon build up this cleaner will clean it however it flushes it through the engine (nowhere else for it to go), therefore after a 50 miles or so of driving your car may have a rough idle as the ECU is figuring out what's happening, drive through it. Best thing to do is drive around 150+ miles after using the cleaner on an older vehicle (that hasn't been cleaned before) in order to flush the cleaner through the system properly. You may have a rough idle for a short while but it will subside and the car will work as smooth as anything after! Read more

The Product arrived a week earlier than mentioned by Amazon although it should have taken about two weeks with shipping i believe. So the "Lucas UPPER CYLINDER and Injector Cleaner" does exactly what it says in the description on the bottle. I have used this product so far in two different BMW engines: the M52B28 and the M62B46! Both engines are equipped With passive injection systems that deliver the Fuel into the intake-manifold right before the intake-valves. Both engines started to run a little smoother and quieter after about 35 to 50 km of regular driving. The engine response was a Lot quicker and in Terms of fuel economy in both Cars ist saved ne about 0,5 liters on 100Kilometers. Next time before i even think about replacing Injectors or Something Else in the fuel line (exept any sort of Filters of course) i'll try a bottle of Lucas and see what that helps. All in all i am very Happy that i found this product and that i can get it here on Amazon from time to time! Thank you for taking the time to read this reply, I Hope it helps! Read more

Noto el coche con mas empuje al acelerar, con algo mas de "alegria" como si trabajara mejor que antes, no como nuevo pero el coche ya pasa de 153000 km y no va igual de fino, mi idea es utilizar las tres botellas seguidas x cada repostaje (medio deposito) para mejorar un poco las prestaciones del motor Read more

وصلني مغلف بشكل ممتاز Read more

I use it on my ford edge and it works. Buy the big bottle so you can save more Read more