Originally Posted by Epoch

Here's what I did for my LCA bolts:

1) Spray PB liberally around where the head and the tip of the bolt meet the subframe, and also spray into the middle of the whole thing too if you can.

2) let it sit for 5 minutes, occasionally (30 secs-1min) tap the head of the bolt and the tip hard enough to have it "ring" but not hard enough to warp the metal i.e. not gentle, but not damaging.

3) Go at that thing with a 6' breaker bar, and it will slide right out. If it doesn't come out, repeat 1 & 2, tapping a little bit more. If it still doesn't come out, more drastic measures might be needed

(I was able to get 4 of the six rear LCA bolts out doing just steps 1&2 once, and 2 of them with one repeat)