Close-up of vehicle underbody showing exhaust pipe and wheel wel…

Gravel collects between the quarter panel & wheelwell top reinforcement, causing rust to blister out along the wheel arch. It must be picked out before it scratches through the paint & galvanizing. Foam caulk backer rod can then be laid across the reinforcement to prevent new gravel from settling here, but it still needs frequent rinsing.
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Owner caption September 2020 · Photo 110 of 195