Re: TEFLON COATING and ANTI RUST YES or NO? Went to 3M on saturday for tints. Enquired about underbody anti rust treatment and they said, Linea/Punto already have Antirust treatment done at the company itself. They were recommending to do this after 3 to 4 years. This is exactly what Mangesh Kodalkar of FIAT also told me a month back. Anyone planning to do the Antirust for the underbody is wasting their hard earned money.