I'd use red as you will need heat to remove them anyway.

The studs I iinstalled in my 996 clearly stated in the instructions to use red threadlocking compound . I did and after a year no issues .

Boy, this has taken on a life of it own.
Good point about checking studs when removing lugs.

Ironically Rennlines instructions give the option to use 272...and the reason to not use 242(blue), and further they offer recommended torque settings, and replacement intervals etc..

http://forums.pelicanparts.com/uploa...1730141437.jpg

The stud, and nut, rely on thread tension (stretch) to stay in place.... "Lesser Loctite" becoming a lubricant is laughable....

At any rate, it seems most give too much praise to "RED" thread lockers. Install with RED and even with a typical stud removal tool, and hand tools (no heat) they can easily be removed....

All of that said, we always install thread in studs with Red Wurth Thread Locker. Never had a problem on countless cars, including our own vehicles (many). Rquired? Don't know, but certainly lowers any risk we have.

Cheers