I bought a new car this week and took it to a Ziebart for a rustproofing.
The wife and I were waiting in the area in the front of the store and I said I was going to take a walk.
I went around to the side of the building and saw a guy looked like in his late 20's polishing on a car I ask if he was putting on the diamond gloss this is the stuff that they charge $350.00 to apply and is claimed to last for years and he said yes he was.
I ask him if he had ever used Duragloss products and he had never heard of it he said we use nothing but carbrite.
I ask if that was what he was using on that car and he said yes.
Looks like the last forever expensive stuff that they put on your car is just a sealant from Carbrite.
Carbrite has some long lasting sealant but you could buy it and apply your self and save about $340.00