Liqui Moly has a very high standard in terms of quality. This applies not only for the specified product.
I use many other products from Liqui Moly and always had a very good result!
But now to the actual product:
I've been over 3 years using the Cavity Protection (preservation) now for my cars.
It comes mainly with me in the doors, the trunk and engine compartments are used. Application example BMW E34 520i.
All 4 doors were slightly rusted below. After I have rusted it, an anti-rust primer came top.
In door inside then the cavity sealing bar. That was 3 years ago.
In this area since then I have no more problems with rust. (After one year I again made another Hohlraumversiegelung)
Thus, I can confirm that with proper use of the vacuum sealing their purpose very well satisfied and keeps its promises.
Without hesitation: buy recommendation!
Update October 2014:
The cavity protection is now for over 5 years now. (Of course, with more than one car, and of course I have not only a can ...)
Not only in my car I am very satisfied! Did the cavity protection also used in cars of friends! Especially with problem areas (eg in the doors ...)
Still, I am convinced of this product!
