ok so i have about 130k on my truck and she is still running like a champ. i have sct with custom tunes from innovative, southbend clutch, straight pipe exhaust, and a afe intake. i have ran it pretty hard at times and never had any coolant loss or any issues really. has she already been studded? if so how can i tell? i bought it from a dealer that said it was all stock. but with this many miles and how i like to burn rubber and be sideways i would think i would have blown it up already. what do u guys think?