Whoa! I have a Denali and a bottle of Zaino will last much longer than 4 applications. The key to Zaino is not using a lot of it. You do not need a lot to get the fine results you are looking for. The key to Zaino is the number of coats you put on following the Z1 in order of Z5, Z2, Z5, Z2, Z5, Z2, etc... with Z6 between the coats when you feel necessary.