Dingy Red Prothanes... How to clean?

[Auto RS T]

I have an old set of Red Prothane motor mount inserts that I'd like to use on my current project, but they look dirty and I'd like them to look fresher.

I tried cleaning a small spot with brake clean, but it didn't seem to phase the dirt. What cleaner have any of you had success doing this with?

 

[Roberti 2G]

Try little bit of WD 40 and wipe it off really good.

 

[3kgt2nv]

simple green and a brush. problem is the poly is probably absorbed some of the oil and has dirt ground into it so even cleaned it will still look dirty

 

[dsmcrzy]

I always had good luck with good old WD-40.

 

[Auto RS T]

Well I've tried WD-40 and Solvent from a parts washer. Neither have worked. Guess I'll give some Simple Green a go next. It's not looking good though.

 

[LTUDSM]

The heat gun will take care of refreshing the rubber. If not use diesel to clean dirt

 

[Auto RS T]

I know it may sound weird, but I ended up just painting the inserts. Nothing would get them up to par, so I just went for it. They look and feel pretty good actually.