So my 5er is older and the gel coat is starting to weather... I was talking to a gent and he suggested we get and try a product called .... CostaCoat... which we found on ebay..
What I discovered was that we needed to do a very extensive cleaning and prepping of the current surface... and a final wash with a good cleaner.... BTW this including a scrubbing with a 3M Pad to scratch and clean the surface...
Their chemical requires 6 coats to get the proper mil thickness to get proper protection.... but WOW the shine is back and it looks great...
Retired Business Owner, Re-manufacturing HD Clutches, Brake Shoes, Air Compressors, Sales & Installation of PacBrake and other Industrial Friction