Weathering locomotive motion

[Seawise]

Firts, apologies if this has come up before, I am interested in darkening the motion linkage on my numerous steam locos.

I have seen on the web a product called Neolube, has anyone sourced this in the UK, it is made in Canada?

Any suggestion welcome.

Thanks in advance.

Regards

Chris

[polo2k]

take a look in your local model shop for chemical blackening solution

[poliss]

Carr's Metal Black for White Metal/Steel. http://www.nairnshire-modelling-supplies.co.uk/carrs-metal-black-for-white-metalsteel-50ml-p-566.html