BY MIKE MCGLOTHLIN
Bulletproo_ ng has long been a buzzword in the diesel industry, but is anything ever really bulletproof? The answer is no. Even balanced and blueprinted engines—pieced together with the strongest internals on the market—can pop if neglected or pushed too far. Sure, built engines, performance transmissions, and competitioncaliber injection systems are designed to withstand or facilitate huge horsepower, but you can’t simply add these things and never think about them again. At some point, depending on your driving habits, power level, how you use your truck, or because of age, you’re going to have to break the seal on that indestructible engine or transmission, along with having your injectors overhauled from time to time.