Whats the point of using chain lube with UV protection if the chain is already hidden from direct sunlight most of the time, and what actual benefits can be expected from using this type of lube compared to regular chain lube? Are the advantages only related to the degradation of the lube itself, or does it also have an impact on the chains lifespan or performance? How much of a difference can be expected in terms of wear and tear on the chain, and are there any specific scenarios where using a UV-resistant lube would be particularly beneficial?