My truck is 2007.not a speck of rust anywhere, as matter of fact when i got tires recently. the tech commented on how clean the undercarriage was no signs of rust at all. yesterday on highway felt a slip in tranny . then was fine thought i was being ocd..got to work and looked underneath, from front tire to rear hatch coverered in atf..both rear lines rotted right thru..had tranny shop replace all 4 lines today..365 total..and watched him do it looked like a bitch glad i didnt attempt it..so beware... powering steering lines dont look great either