I installed this on
Mazda 6

Review
As soon as i added and mixed with my petrol, noise in the engine was being reduced significantly, along with eliminating almost all vibration while idling. I had also noticed that my car's fuel consumption had slightly improved, and emission of smoke from my exhaust is also being conservatively environment friendly. Side effects aside, I'm now experiencing even better engine performance and throttle response. No more 'heavy' driving!

What I like
Engine noise and vibration is greatly reduced. Engine performance was also being boosted!

What I do not like
A little pricey!