Perhaps those who've contributed to this thread so far can help me determine whether I've got a problem with nitrogen cells or not.

The only symptom so far is a noise behind me that sounds like a container filling with fluid, less than a minute after the car has been started after sitting for a while, lasts about 10 seconds. Suspension seems fine, ride quality seems fine, etc. I've only noticed this in the past month or so. Car doesn't move vertically or laterally while this occurs. Of course, my mechanic can't hear it.

Any ideas?

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RJ
'92 500E
'75 Triumph TR 6