go to a car-wash and wash out that area real good, wait 1-2days and let it dry good. then go to autozone and get a "liquid wrench penatrating oil" for about 4 bucks and spray that on there. all around the strut and the upper part of it.

if u cant reach the top, then unscrew the three bolt of the strut under the hood and the lift that side of the car w/ the jack. the strut will come down slowly and u'll be able to spray it on there.

and spray it on all the other joints, ex: lower arm, upper arm, tie rods, etc.