I think my engine mount(s) are due for replacement, as I'm feeling more vibration lately. On my 86 5000CST, automatic, which mount(s) are likely bad, or should I just replace them all? I know when I replaced those on my Jetta a couple of years ago, I was shocked when most of them fell apart in my hands, but I remember they were very expensive, hydraulic filled units. Jeremy Walters San Ramon, CA