Forum Discussion

crcr's avatar
crcr
Explorer
May 10, 2017

303 Protectant or Nu Finish for Smooth Fiberglass RV Finish?

I have used 303 Aerospace Protectant for the decals on our TT for several years now. I just treated the decals again with 303. I noticed that the smooth white fiberglass finish is dulled and I need to polish or treat it again.

The places on the smooth fiberglass outside the decals where I got some 303 on it look great now, so I am considering whether to just use 303 on the entire finish of our TT. Or to use wipe on and off car polish (I have used NuFinish Liquid Car Polish in the past). I did just now email the manufacturer of the 303 and ask them if it was a good product for the entire finish, so I'm waiting to hear back from them. In the meantime, I thought I would ask on here for recommendations from fellow RV'ers.
Seeking Advice
  • harold1946's avatar
    harold1946
    Explorer
    May 10, 2017
    I have been using 303 since 1993 on all our vehicles, including our boat, and am very pleased. It will not restore the finish, but after removing the oxidation it will help protect it from UV damage and maintain the shine. Very few waxes, if any, offer any UV protection, 303 does (SPF 40).
    One advantage of 303 is there is no need to remove prior coat, Wax cleaner) before applying the next.
  • MFL's avatar
    MFL
    Nomad II
    May 10, 2017
    Between the two products in OP, Nu Finish is far superior to 303, for use on the smooth fiberglass. While the 303 will give a temporary shine, it will be gone very quickly, just using a damp cloth, followed by a dry microfiber towel. I do use the 303 on my decals, which helps, but will not save them from the sun indefinitely.

    Jerry
  • donn0128's avatar
    donn0128
    Explorer II
    May 10, 2017
    303 or any spray ones are a 30 minute fix. For longer term you need a good polish. Nufunish, McGuire's RV marine in the blue bottles are pretty good. I prefer Collinite myself
  • Campfire_Time's avatar
    Campfire_Time
    Explorer
    May 10, 2017
    It will probably work for a while until it weathers off. In my experience the only way to get the shine back is using a buffer with white polishing compound followed by good wax.

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