If you are currently experiencing one or more of the indications to follow, then you may need new shock and or struts.
 

·        Decrease in the fluid level in the reservoir.

o        If the reservoir is not full, look for oil, or wetness on the shocks and struts.

·        Check for apparent broken mounts, and dented housing.

The thing is that you are not necessarily creating a driving hazard by driving on worn shocks and struts.  But, if you are still unsatisfied with the handling of your car when towing a trailer, or hauling an overload, you may want to consider upgrading the original factory shocks and struts.  Below is a list gathered by Cars in Houston.

·        On older cars to strictly improve the overall quality of the drive.

o        Eliminates the bouncing and rocking on rough roads. 

·        Upgrading to gas charged shocks and struts.

o       Charged with high pressure of nitrogen gas

o       Interested in performance handling.

§         Minimizes the hydraulic fluid foaming inside the shocks.

§         Reduces fading on rough roads, and assists in maintaining control at sharp turns.  

·        Upgrading to Heavy duty shocks and struts

o       Larger diameter pistons.

o       Provides an increased control and improved resistance.

o       Considered by experts to be too harsh for everyday driving.

·        Upgrading to air-assisted shocks (also called Overload)

o       If you are constantly towing a trailer, or hauling extra cargo.

o       Surrounded by a coil spring to help increase the loading capacity of the suspension.

o       Dedicates a stiffer ride than the standard shocks

o       Equipped with an adjustable air bladder to assist in carrying extra weight.

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