I'm on my third clippy fan now, I've tried prepping them with WD but they're just not designed to last. I'll be interested to see how you get on with that Infinity unit.
After every run I WD my 6" fans, opening them up as well to get to the motors inside. I've only had to replace a couple these past few years.
Only just replaced one of my original ones when I first started. Must have been nearly 6yrs old.
Funny thing any fans I've bought and have been marketed to the canna community has crapped out on me first. The cheap ones from our discount hardware store last way longer.