Recommendation for caravans

I am a dinosaur of 72 years and write for the first time in my life a review ....
I can only agree with the excellent reviews!
But I had to have a recommendation ....
For about 25 years I have been with caravan on the road and know the care problems. The rain leaves permanently ugly black stripes. These problems - and the problems with the removal of the same - everyone knows caravan holder.
I have applied the wax after a thorough cleaning in April last year and was pleasantly surprised how easy in September could be washed off these strips. I then applied the wax again and now - in March - can easily wash the strips, although the caravan was not covered and totally exposed to the elements. Have applied once again the wax.
I would recommend this product to anyone caravan or motorhome holder !!
Of course, my car gets this care also.