I was burning about 1 liter per 600 miles and I really thought my engine was on its way out. I did some reading and watched some videos. This stuff is amazing, I am currently at 1700 miles and I have not added any oil. The engine runs great too. I highly recommend if your engine is consuming oil!! Jack I.

It might look scary to pour this into your engine but personally I think it works great. I've only used it for the past 2 oil changes but I notice less "typewriter" chatter from the N63. My car takes 9.5 quarts so I put in a bit less than 2 bottles.

Works good, did quiet my noisy m113k valvetrain and seem to run smoother. I put it in most of my cars for giggles now.

Great additive for 2003 E39. It does make a difference. FCP Euro is the way to go.

This is something you might not gonna notice immediately but it truly helps improve engine performance and I can feel the difference while cranking my car up, I used it in 2011 Mercedes-Benz E350 on 110,000 miles oil change and it also does the ceramic coating around the engine.

Engine noise got a little quieter overall I do notice somewhat of a good idle its been 3k miles so far, will add more once on my 3-4 oil change interval

I have 150K+ on my Sprinter 3.0L. After driving about 500 miles. I have noticed the engine starting and running a bit smoother. I believe this is a worthwhile product. Will now be adding it to every oil change.

Liquimoly is the best.

This was the best 27 bucks I ever spent. I did an oil change today and I added this additive to it. As soon as I started the engine and immediately, I notice the changes. I have a 09 Jetta 2.5 and we all know how noisy the engine can be, mine was not too terrible but after I added this product was like hitting the mute key on your tv remote control..... Took the car for a quick spin and could tell the difference. This product made my engine a 'happy engine'!!!!

Makes an immediate difference, it makes my engines run smoother and quieter, it also seems to gain a tad of responsiveness. I run it in all of my cars