We had a Triumph TR6 come in with a drooping near side front suspension. The cause of the drop was due to the upper wishbone mount breaking away from the chassis. Once we got it apart it was apparent why. The polyurethane bushes that had been fitted to the upper wishbones were totally dry. No grease what so ever. The upper wishbone had seized leading to the eventual fatigue and fracturing of the chassis. We had to remake this part of the chassis from steel and weld it into place. The bushes on both sides were lubricated with rubber grease before the whole lot was put back together and the car could be put back on the road.