I found (mostly by mistake) that petroleum distillates liquifies it so I can remove it with rags or whatever. I tried some WD40 on a whim and it worked. I contains petroleum distillates. I tried some charcoal lighter fluid and it worked also but better (also petroleum distillates). So I guess the Mineral Spirits was the trick. Much less expensive than PRE.

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT