So I have a 2014 Ford flex with a PTU. First time I changed the PTU (supposedly lifetime) fluid it let out all the magical slivery sparkles. It looked like oil got mixed with glitter. Changed it again recently and I did not see any glitter 10k miles later. Normally when you see a lot of glitter in these PTU units is it time to start saving up for a new PTU unit because now it is a matter of time?