Todd@RUPES
Just a regular guy
No I don't but when bird bombs still etch through, water spots still prevail, scratches and swirls still happen, what exactly is left to protect from?
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This isn't a bad point, and one that should be repeated!
Does wax/sealant/coating offer protection?
Yes. We know, at the very least, that something is left behind. We can see a change in shine and a change in water beading.
How much protection does a wax/sealant/coating offer?
Since we know something is there, and something is adding some layer of protection, this is the next question. The answer is that is really depends on the product, the environment and the paint.
However, it should be noted that the single best protective layer for your color coat is the clear coat paint on top. Paint is engineered, catalyzed and cross-linked, not to mention thick! Anything that can permanently damage paint is going to eat through whatever wax/sealant/coating you have.
Coatings offer the most protection, sealants offer the second most, and waxes usually the least (although waxes do have excellent UV absorption characteristics).
Proper maintenance and cleaning are always going to be components of any successful car care routine.
Yes you may still get etchings, water spots, scratches and swirls, but the deciding factor is how much worse would they be without the protectant. Waxes, sealants and coatings by you more time, in some cases considerably more time, but everything has its limits.