For years I have always started out with a two bucket/grit guard wash in shade or before sunset and dry. Next I clay the entire vehicle then go over the vehicle with a detailer spray to make sure the surface is clean. I use my porter cable 7424xp with some Meguiar's M205 to give it a good polish to remove any minor imperfections then follow up with a sealant or wax. Once I complete this process yearly I just wash and do a spray wax weekly and this keeps my vehicles protected and looking good throughout the year. Cheers!