So I just bought our first Cadillac, an Escalade ESV Platinum, white with 10k miles and is Certified. Pretty excited about flying my 2 boys and I to Chicago next weekend to pick up and drive home. My first questions weather to undercoat it or not? We live in Maine and live with the calcium chloride on our roads about 5 months of the year. My 03' F350 with 200k miles is quickly turning into a rust bucket and I don't want that to happen to a vehicle that was $101k new and is in pristine condition. So what do the masses say? Spray undercoat with the black goopy stuff? Fluid film? Or sans coating? I'm all ears. Thanks in advance.