Advanced XADO Petrol/Diesel Additive Restores Treats Engine Knocks Worn Bearings, up to 5 liter oil

Instantly quietened the engine upon starting, good product

This stuff works and I love what the product does. 8 year old diesel Nissan Qashqai running quieter in minutes. To feel the full benefit you'll run the car for 600-900 miles and every journey seems to bring further improvement. Once piece of advice, ensure the product is warm when applying 25 degrees plus.It does tell you how to install on the packaging which is simple and mentions getting the product above 25 degrees, which isn't that straight forward in winter.I boiled a kettle and stood the bottle inside the kettle and had the water level about 2/3rds of the way up the bottle, which is very substantial and made of some sort of metal.I'm sure you can find your own way of heating the product, this is just an idea.

Definitely made a diffrence. Quieter and feels refined.The engineer seems to be alot happier in its self.Not really noticed a MPG diffrence but not really taken any notice as that's not what I was looking for.All in all on a 70,000 mile deisel engine it was definitely worth it.

This is an excellent product you can literally hear the engine sound quitening as you run your car after putting it in. My car runs more smoothly too.I am very pleased to say communication with the company was really good after the delivery company lost my parcel, they have sorted it out. Many thanks. I will buy again when needed.

Really good, really work

Good but very expensive

Put the product into the engine as instructed ran the car as instructed but no change to noise did not work not impressed

Looks like it works the way it's told by the manufacturer.