Hydraulic suspension bushings were developed in response to specific customer desires: quieter and better-handling vehicles.
The suspension needs just as much or more attention when compared to the engine.
As the bushing ages, it acquires a “set” that is easily disturbed when a vehicle’s steering system is realigned. When this happens, the bushing begins to separate from its metal sleeve and becomes, in essence, a frictional wearing component.
In this Tech Minute, Andrew Markel discusses suspension bushings and motor mounts, and the nature of the non-oil fluid that aids their function.