Liqui Moly brand products are almost always very good. Had there never been a bad Learn done.
I was particularly impressed by the good adhesion. Even in places that could not be so easily reached the pre-clean the underbody coating adheres perfectly!
Alone here you could tell the difference with the cheap underbody protection! (Had bought earlier the cheap from the supermarket. Does not half a year!)
Have him now for 5 weeks at a car. Bin in the period about 4500 km on the clock! Salt, ice, snow, water, mud, stones, and so on. The underbody protection keeps perfectly.
Had the car yesterday on the lift. I am very confident and will continue to use this underbody protection.
ADDENDUM:
Have underbody protection now more than 1 year at the car.
On a couple of small points he has gone off. (I guess by rock falls, etc.)
Rust in scarce. Sanded short and cleaned, new underbody protection on it, finished.
Everything fits very well.
Am still very happy with the underbody protection and saw no reason to try another.
Update October 2014:
Have underbody protection now for 4 years at the car. (BMW E34 24 years old)
Since I the car's underbody protection is as good as every day use just arrived in the year!
(Mileage per year about 45000km)
It is astonishing to me that still adheres to the underbody protection at most places.
Now have the bodies cleaned again and new underbody protection on it.
Another reason to continue using the product is not only good adhesion but also the protection against dirt and rust.
Could barely disguise rust on the underbody. Is sure not only to the underbody protection. (However, I do believe that the underbody contributes a part to it!)