Back in the day it was very important to lubricate all of the joints in your car's suspension. The joints were rubber, and as they dried out everything started to get stiff. A stiff chassis meant a harsh ride. The answer was to shove grease in all of these nooks and crannies. They called it a chassis lube, and it was a regular part of many maintenance packages, especially the oil change.
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These days, cars still have joints, but the rubber compounds they are using are far superior to the old bushings and can stay soft, pliable and slick on their own. This pretty much sends the chassis lube into the history books.
Unfortunately, many oil and lube centers still include this in their "premium packages" even though they aren't going to lube anything on your car. If you're having your car serviced, think about the chassis lube and anything else on the list of services they offer before you choose which package to spend your hard earned cash on.
