It will last for quite some time...
FWIW what is happening is the plasticizers (the additives which make it flexible) are leeching out of the porus material.
Here is a 69 DASH PAD which was so sticky that it would pull lint from a cloth...
Cleaned with denatured alcohol...
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~JAG~
NCRS#65120
68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car
#21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built.
71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist.
NUMEROUS Lemans blue Camaros,
Monza Red and Daytona Yellow Corvettes
& a Chevelle or two...
Survivors, restored cars, & other photos
https://picasaweb.google.com/lh/myphotos
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