Using a 5 litre tin of the 120-4 Body Cavity Protection, I can spray three vehicles. Using a 5 litre tin of the Hardwax, I can spray the underside of two vehicles.

To perform a thorough job, and have some product left over for future touch-up work, use a case(12 cans-SAVE 10% on cases of 12-pls. inquire!) of the Hardwax aerosol cans.

-Mike