I just sprayed down the innards of a freshly installed roof rack with Boeshield T9 and I remembered that I told a friend I wanted to treat the more vulnerable parts of his car against road salt before ski season. While I did the T9 treatment to buy me time before I need to replace the crossbars, for some reason Yakima rusts faster than Thule I know that it's wax-based and Fluid Film is based off lanolin. I want to treat the existing corrosion first and then protect it. Does Fluid Film have an edge over T9 or it's all the same more or less?