OK, I have 2-3 bags of plastics which are very dry. Still useable but dry. What can I use to re lubricate them. I have heard that some guys use spray n cook.

I generally put a little anise oil in mine. adds scent and lubricates.

You could try buying Worm Oil which is what they put on plastics so they don't dry up in the bags. To be honest if they're really dried up you may not be able to restore them to how they should be. The only thing to do is try it. If not, go buy some new ones.

Does one get worm oil from tackle dealers?

http://www.caneycreekmolds.com/Worm-Oil_p_192.html

This is just one product of many. If you google "Worm Oil" you can probably find a few dozen products. Being that you're in South Africa, you might have to battle shipping. Some of the oils are scented, some are not. Best of luck.

mega strike.

A few drops of worm oil can be added to bags of soft plastics to freshen up dried out plastics. The oil will also keep them from sticking together, and keep them lasting longer without drying out.

http://www.jannsnetcraft.com/soft-plastic-lure-molds/044050100006.aspx