Hey, my mecanics told me my ball joint were dangerously loose and wheel was shaking a lot on lift but I've just add grease in them (4 shoot up and 5 shoot down on both sided, no more shakink,

Do ya think what he tought as a bad part was mostly just a missing of grease? New cars dont have zerts but I do and does adding greace once in a while is ok to keep rinning those sets off ball joint?

 

No.. sorry! Grease will fill the cup and quiet things a bit, but wont hold your car up. I assume your lower joints were creaking or squeaking. Once they do that just a matter of time.

 

Mecanics said only upper joint are loose. Bottom one still OK

 

Big difference. The lower supports the weight of the vehicle, the upper controls the suspension and steering geometry. I've run loose uppers on my thunderbird, but I definitely dont recommend it.

If it does come loose you will lose a lot of steering and braking control, possibly all braking for the front and that's not a good thing to happen at the same time.