Wife's car started squeaking from left front wheel, over bumps and when steering. Front suspension seems nice and tight, lubed the control arm bushings, upper strut mounts, and the links between the upper and lower control arms. The noise went away for about 100km, now it's back with a vengeance. I fear it's the rack and pinion assembly... It has 125000 well maintained kilometers on it, what else might be to blame?