Hi BillyHW, I live in Toronto, Canada. Ordered a new 2020 JL UNSAHA to come in a month. Did not go for the Chrysler rust proof as the dealer was asking $2000 (includes internal fabric coverage, rust proof, undercoat, paint). I have always used local Krown on my other cars for rustproofing, without any problem. I needed a second opinion to go with Krown, for my new JL - I am just scared if the undercoating may cause any issues with the sensors. I am also wondering if Chrysler would void the warranty for not using their product.After doing some research I'm probably going to go with Krown. And the service is available locally.
Any advise will be appreciated.