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I need to do a complete decontamination before adding new sealant. In addition to iron removal and claying I’m thinking about mixing some Purple Power Multi-Purpose pressure wash concentrate with Turtle Wax Max-Power Car Wash (at the Xtreme level 9oz) to get sufficient high ph to remove the traffic film. I chose these because I already have both. I’m not convinced the TW alone will be enough. Will this mixture be too severe? Any suggestions would be helpful.
