Good quality

Definitely noticed a difference within a week of use. Slightly smoother acceleration and power. Pay attention to how much you'll need. 1 bottle is (300ml), I bought 2 for my tank size.

Noticed 2-3MPG increase at the end of the first tank of gas. Normally 26, now 28. I'll keep using it as recommended.

may or may not have worked. Without reference and tests youll never really know. Switched to Redline cleaner for regular 1000 mile intervals. It has the necessary composition to clean piston heads and DI injectors.

Threw a can in my 146k mile 2012 Audi A6 that had hard starts, and vibration while idling. Hard to tell, but seems to have helped a little.

works great as part of regular preventive maintenance

Seems to run smoother after added to fuel or…

This is a great product and recommend to everyone. After use, I could tell a difference in the sound and how the engine was running. Used before a California smog test due having over 135,000 miles and car passed with flying colors. It helped with gas mileage as well.

Can’t see it working, but I’m sure it does. Makes me feel good to know I’m at least trying to keep the inside clean.

I use this at every oil change. Swap between this one and the “Liqui Monly Gasoline system cleaner”. Just a maintenance thing I do. Really not sure if it works as I don’t take the engine apart or put a camera in.