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303 Aerospace Protectant Spray

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Would we buy it again? Yes
Value High
Ease of use Easy


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Ah I love my lists and really despise them at the same time - this is one of those moments. It’s been raining everyday for over a week and I’ve yet to complete my last maintenance and then this one popped up on the calendar. This is another review triggered by our family camper maintenance schedule, this time for 303 Aerospace Protectant. This is the stuff that we have used on hard plastics and rubbers on the camper since we bought it.

If you read my last product review, you’ll know that I’m on a little bit of a mission against the Florida sun and its destructive powers on our camper.

303 Aerospace Protectant’s claim to fame is that it restores the plastics and rubber, while providing UV protection to the surface. After a few years of using the product I’d have to say that it seems to be working very well and lives up to the claim. The plastic on the camper still looks new and the tires don’t have any dry rot on them. Even the plastic propane tank covers look brand new and on our last camper we were already on set number two at this point.


First off, make sure that everything is clean and dry - by dry I mean really dry not damp, dry. Any bit of water on the surface is going to give you a funky mix that needs extra buffing to get it to work into the surface. Then simply spray some of the 303 Aerospace Protectant on a clean microfiber rag or directly on the surface followed by buffing it in. A little goes a long way so I tend to use less and then add more if needed. From what I understand surface tension created by the buffing motion makes this stuff work. Also pay attention to putting it on too heavily though, if you do, the first time it rains or is a heavy dew you’ll get streaks in the plastic. This can be easily buffed out, but it’s easier not to have to do it in the first place.


I really like using 303 Aerospace Protectant, mainly because it just works. After using it for close to three years all of the plastic and rubber still looks like the day that we picked up the trailer. I even use it on the cars now, and with all the plastic on them it really keeps it looking good. I don’t like that I need to apply it every quarter, but it’s still a lot better than the next closest that I’ve found. If it tells you anything 303 Aerospace Protectant is one of only a handful of items that I have automatically sent to the house every quarter with Amazon’s Subscribe & Save Program.

Always follow the manufacturers instructions, this write up is simply the way that I do it, and it may or may not be the right way. Use your common sense when applying products to or altering your stuff and always wear the appropriate safety gear.

Links to the other posts in the Camper Maintenance series

  1. Duragloss 531 Vinyl Protectant
  2. 303 Aerospace Protectant Spray
  3. Review of Duragloss 501 RV Polish
  4. Trailer Batteries 101