Protectant for plastic roof vent doors
We just got a new motorhome and I would like to know the best way to protect the plastic crank up roof vents that over time become faded and brittle. What is good to use and how often should you use i...
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303 Aerospace Protectant is what I use. Started using it in 1993 on everything. Never had to replace any of the plastic parts in 20 years of use.
