Glossometer study results

[friendly_jacek]

Someone with access to equipment and too much time did a study:
Car Care: Controlled experiment - test gloss and durability of the top paint finishes (http://www.teslamotorsclub.com/showthread.php/12794-Car-Care-Controlled-experiment-test-gloss-and-durability-of-the-top-paint-finishes?)

The results are here: https://docs.google.com/spreadsheet/ccc?key=0AgFCxifi7tLAdDFJRDFNZUV2aDZwVGQ5NEs2WXQ1b 1E#gid=0

OC2 did very well initially, but the long term results are disappointing.

Sorry if this was previously posted here.

[ihaveacamaro]

That is exactly the type of thing I'm going to do in my free time when I'm a dentist and can afford it.

kudos to the guy for making his own tests, although I don't agree with his product choices. I'm not sure he knows what a "polish" is as he said a few times he is going to apply the protectant (sealant or otherwise) and then the polish.

[SR99]

Interesting...thanks for posting.

If anyone read that entire gigantic thread, how many points does this glossmeter have to move before the average human eye can detect it, and is it a linear scale?

Without knowing that, and just looking comparatively, it seems all the products do roughly the same, within a few percentage points, so maybe we are all kidding ourselves when we think a particular product performs far better than others ;).

But it really comes down to the answer to my question. If the average eye can only detect about a 5 point difference in glossmeter reading, there's no big difference. If instead the average eye can detect a difference of .1, then there's a meaningful difference if it's a linear scale. If the scale is non-linear then all bets are off and you'd need to see the curves.