All you folks that bought the ebay Volvo/BMW tool:
Are you able to torque the cap to spec without the tool flexing or damaging the cap..? I was going to get it, but my experience with the steel ones isn't as good as the cast Aluminum ones. The Al ones are a little beefier and don't flex at all, but the steel ones can slightly flex. If that happens, the torque is off and the flexing ends up damaging the plastic cap.