Never use a needle on your car!

Why do mechanics hate when you inject oil into a squeaky ball joint?! 🚀⚙️
When the suspension on your car starts to creak and squeak over bumps, it usually means the heavy-duty grease inside your ball joints or tie rod ends has dried up. A common "hack" used by shady used car lots is to take a medical syringe full of oil and inject it directly through the rubber dust boot! 
While this might temporarily silence the squeaking metal, it is incredibly dangerous! Poking a hole in the rubber seal allows water, road salt, and abrasive grit to enter the joint. This will quickly wash out any remaining grease and cause the metal ball to rust and deteriorate. Eventually, the weakened joint will violently snap, causing your wheel to collapse while driving! Always replace failing suspension parts!