Quote Originally Posted by watusi View Post
so the rule of thumb is always strip the old wax or sealant before applying a new coat?

So stripping the old layer of wax or sealant can be done by either of the following??
  1. wash the cash using a higher concentration of car shampoo
  2. using a pre-wax cleaner (max of 2 times a year)
  3. claying (can be used as often as possible)
  4. Alcohol Wipe down (do I apply this when the car is wet or dry?)
higher concentration of shampoo doesn't always work, it depends on the wax and sealant, there are some waxes that are detergent proof and most sealants are detergent proof

Alcohol - i use pure alcohol to strip down wax and most still stays intact but on the OTC waxes yes they get stripped by alcohol