The taillight gaskets on my diesel are old. There is no cracking but they are a little dry. Some water is getting in to the trunk wells. Years ago on my '80 SD, I used silicone sealant, but I would rather find a cleaner, better way.

Is there some I could use to recondition the gaskets? Vaseline? Petro-jelly? Lithium grease?

Thanks, Mike

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E