[Argess]

Yes Patrick... I knew the question thing was a courtroom thing, not an internet forum thing, and that was part of the tease!

About a month ago or so I did an experiment by adding a few ounces of DOT 3 to the same amount of DOT 5. I shook the bottle up and waited. In only a few minutes, the two had separated with the DOT5 on the bottom. I should make a video and post it.

I've repeated the shaking a few times since then and never did I observe any of the frequently reported goopiness. They separated like water and gas, but took a few minutes instead of being almost instant.

It really makes me wonder if a lot of the problem switching from one to the other is generated by people repeating internet speculations.

I really can't see from my little test how a few drops of DOT 5 left in a system could cause any trouble when refilling with DOT3 or 4.