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I had been spraying plenty of fluid film on many places (hi-lift jack, windsheild light bar, suspension system, etc) a few times a year. But I agree with you - it traps a lot of grime and salt. I even parked my Jeep for most of the winter to keep the salt away. I'm thinking the real damage happened when I drove on the beaches last summer. Seems like even the air near the ocean is corrosive. The entire Jeep gets covered in a fine spray of salt and sand particles.
It will be interesting to see how the Sharkhide holds up. I'll post some pics of the ingredients, instructions and warning labels when it arrives.