I was at a local parts store and I see all the different brands of car wash that is being sold. Some have wax mixed in others are shampoo. My question is, is there really any difference in car wash. There was the meguiars that cost 8.88 for 2 quarts and a generic wild cherry car wash that was 3.88 for a gallon. The only reason i didnt buy the generic gallon is because it had a disclaimer on the back that said the company wasnt responsible for any damages due to misuse which kinda scared me.