Power steering has been present in production cars for decades, but EPS is the latest in innovative technology that's ...

But, with the advances in hydraulic lifter design, namely short-travel lifters, tighter hydraulic piston clearances, and lightweight valvetrain components, many hydraulic lifter-equipped engines ...

Why? Under the stresses of high rpm, the hydraulic piston, which serves to zero-out the clearances in normal operation, can either pump up or bleed down. These are two very different phenomena ...