I also did lots of research on fluid film and think it's the best option. Only down side is you need to apply it 1 - 2 times a year. But it goes on pretty easy, and buy it by the gallon along with a sprayer and apply liberally.^This. I just had 3 cans of fluid film shipped to my door for $33.50 from Amazon. I did alotttt of research on this topic and it seems to be the best solution comparing all pros and cons.
I only said that due to cost. Usually the dealer is going to charge a much higher labor rate per hour than a small time garage and the dealer's expertise about the vehicle isn't needed to spray undercoating on its bottom. I only meant that you could likely save some money and spend that on other mods.Why isn't it a good idea to get it undercoated by the dealer?
2 three layers if rust scale on my front axle/knuckles I wires off. After sprayed a couple coats of rustolium. Also when around and quickly hit some rust areas on the rear axle and frame. Looks great IMOIMO the best price/performance ratio product is just regular spray can rustoleum Wire brush or sand blaster if youre really into it I had a 2005 f150 that was nearly spotless in ohio sold it in uhh...2010 or 2011 I dont have any direct under carriage pics but the rustoleum did a great job protecting Its only like 3-4$ for a big can