I have tried petroll and parafin and it does work, eventually, but its hard work. I have always thought that placing the parts in a tin over a tin could melt the cosmolene. Might be worth a try.
Hi Kostas..I have found the best way to get Cosmolene off is to put the parts into an old saucepan..top up with water and heat gently until the cosmolene melts..Then remove, wipe off any surplus and lubricate the parts with WD 40...Ian
By gently playing a heat gun set on high over the coated parts, the cosmoline ran off like water... the final film wiped off with a rag and a bit of solvent....quick and easy and all the mess caught on a piece of newspaper; no cleanup.
hi kostas,you could always send your bits to andy,he will bake them at 180 degrees in a moderate oven,boil them in one of his wifes best saucepans,then chuck the lot in the dishwasher to make sure they are sparkling.
ps send him a cabbage so he can boil that next to your parts
then his wife wont find out with the smell.
cheers rick