Helped reduce oil consumption on my 2015 Volvo 4cyl which has the bad design 2-piece piston rings. Reduced oil burning by around 20%, not ground breaking but hey I will take it. A friend said it also worked on his Audi which I believe has the same problem, probably the same factory ring supplier at the time to Audi and Volvo.

My X5 has over 200k miles and I do not know if it ever received an engine flush... I purchased this along with Liqui Moly 5W-40 oil kit and I can definitely feel the difference when I drive.... Im so glad I performed an engine flush because I wanna be able to preserve this engine for as long as possible

perfect for my audi sq5 and my r56 mini cooper s. I flush everytime before my oil change

I bought my Volvo 850 used with a questionable service history and this undid years of neglect and engine carbon build up. It seemed scary at first, but following the instructions properly and doing a second flush with just oil to get rid of any residual Liqui Moly, my car has never ran so smooth and quiet before.

Generally thought engine flushes could cause more issues than they promised to fix but this one worked very well. Followed the very specific instructions and found oil to be quite a bit darker than usual at 5k intervals. Will definitely use it on next oil change.

I like it to use this after a couple oil changes. Will buy again.

I use this for my M156 and 3S-GTE motor prior to changing the oil. For the M156 follow up with the CeraTec and motor oil saver for my older 3S-GTE. Quality products!

Yeah, use it when you buy a used car, it clearly gets sludge out. I like to use it first two oil changes on a used car and then a ceratec and high quality liquid moly. After that the engine just runs well. I have a tuned N54 and change oil every 2k miles and have to say LIQUI MOLY oil runs strong even on pure e85 and a strong tune for years.

I used this following the directions with the video below. I changed my oil twice basically, including the oil filter. I ran it for 15 minutes between each oil change by letting it idle. That took place about 6 weeks ago, and I haven't had any new issues/noises. My 2008 XC70 is my daily, so I'd have noticed issues by now. The oil coming out at first was definitely much darker, but it was also 6 month old oil. When I ran the cheaper oil through vs the final quality Moly oil, there was definitely a difference. https://www.youtube.com/watch?v=vAcaGA_tUK4&feature=share&si=ELPmzJkDCLju2KnD5oyZMQ

I had been using FCP Euro for all my cars, customer friendly, quick responses on my emails, another words, great service and I would recommend to anyone using European cars. Cheers, Dariusz L.