Originally Posted by Rogue_Wulff
Locktite on the fan clutch? No need, if you get it tight. Particularly if you ever want to get it back off.......
Several members on here recommend loctite to keep the fan from unscrewing itself when the engine stops. Its not pretty when the fan loosens up and propels itself into the radiator.
Having used loctite on my fan clutch, I had no problem removing it a second time when the cheap pump I used failed 2 years later. I can't remember which color I used (red or blue) but it was under the advice from this forum.