Silk wrote:Horse wrote:I spent some time in NZ a couple of years back, including some of that with the Hella lighting people out there (about half a day ).
I hadn't been aware that UV in sunlight can degrade plastics used on vehicles. Now, it's a particular issue in NZ (hole, ozone layer, etc., so I was told), with some lower-quality plastic deteriorating more quickly.
According to my physics teacher, glass blocks UV. Which is the reason you don't get sunburn in a car. It's probably the light and, more so, the heat that causes the damage. Most of the damage is probably done when the car is parked and allowed to get hot.
The reason it came up was that they were selecting and fitting plastic-lensed lighting for us I presume the same applies to any other exterior plastics.
Mind you, look at the red paint used on older Vauxhalls . . . pink! Our old Nova had a good going over with the T-Cut then 'colour-restoring' polish before trade-in