My car is VERY VERY VERY squeaky despite all the grease ive added?

I've gone to countless mechanic shop to get my car greased up but it continues to squeak....what is it!?!? its driving me insane, it happens when i go over bumps or when the car moves period, even as im getting in the car the force on it makes it squeak can someone please help???(i have 1998 mercury mountaineer by the way)
 
Back
Top