I have 155k + miles and it just runs great! But my problem is when I stop at the signal and leave the car in D, the car shakes a bit too high. But if I put it in Neutral, the shaking stops altogether. I havnt noticed any major change in revs. Runs smoothly without any vibrtions in motion - both forward and reverse. Seems like the prob. Is only when I stop the car and stay in drive. Not that it is any inconvinience, what I am bothered is whether it would damage my engine mountings.