From what I've read in other threads it sounds like this isn't roush's supercharger at fault, it sounds like whoever is installing them is at fault, ever other time I've heard of this the owner takes the truck in or removes and reinstalls the supercharger them self and finds that the rear gasket of the supercharger is leaking, and can usually fix it themselves just by putting the gasket back in place or tightening the bolts, roush knows this, and they know that it's not their fault their superchargers aren't being installed correctly, truly there's nothing they could really do about it except require all roush superchargers be installed by a roush shop that has been trained to follow every step of installing the supercharger exactly how roush wants them to, which won't happen