I had mine back out once, and It really killed my distributor cap, but other than that, I didn't notice any adverse performance with it. I just happened to hear a rattle, so I took it to the dealer and had them take it apart...gotta love warranty.

Any way, if you're gonna use locktite, make sure you use the realy light stuff, not the red stuff, cause otherwise you'll have a really hard time getting it out later, if it even comes out without stripping....

Later,
Aj