The stuff is definitely worth it. It knocked out an audible tick in my idle.

I've been using this stuff for years at this point. I use it every 30k miles on my 2017 Volkswagen Golf Alltrack with the 1.8T EA888 engine. The first time i used it, i noticed an immediate quietness from the engine at idle. I even use it in my wifes 2007 Toyota Matrix. I'm not usually one to buy into these additives but this one really works. Highly recommend. Just add it to oil change kit, and add it before you pour your new oil.

I bought the product as per some recommendations from fellow enthusiasts. Not sure about the long-term results, but was referenced to it as to one of the best lubrication additives to go with for these cars. So time will show.

I experienced an almost immediate reduction of engine vibration after changing my oil and adding Ceratek to the crankcase. I have been tracking my fuel economy with every tank and have not noticed any difference in MPG. This was used on a very high mileage VW TDI, I also noticed an improvement in engine oil consumption. I’m impressed with the smoothness of the engine after the treatment; I will test it on other vehicles and in the manual transmission to see what it does. I’d recommend using this in any vehicle you want to run smoother and reduce friction.

Improved MPG by about 10% on my 2003 E46 ZHP

I think my engine spins much better with this additive.

Used 4OZs in the last trans fluid change. Noticed greater smoothness in shifting. Had used this in Engine with no noticeable benefit.

Always use this on my cars. Smooths down the idle on my b7 s4 and gives me the peace of mind usually.

LM is the best oil your Euro car can have. And their additives are no joke either. Don’t pass it off as “snake oil” until you try it. This protects your engine for 30k miles and helps it run a little more smooth. I use it in my girlfriend’s Subaru and both my E46 and E90 BMWs.

This review is for my 3.0 TDI bro's, been using this alternating with motor oil saver as a preventative maintenance and 140,000 miles no issues to report. No timing chain issues, no oil leaks, no turbocharger issues; Ive had one DPF failure, covered under warranty, but this was before i was using ceratec. I'll report back with an updated review when i hit another milestone.