Re: turner sling
I've got one of the leather turner slings. Had it about 3 maybe 4 years now and I've never done anything to it at all. I imagine somethings like neets foot oil would soften it and make it stretch and it'd be harder to get get and locked in with it. Mine still looks almost new, just a couple of dirty spots around the swivels. I do remember turner selling some product from the company's website that was a leather product. I do not remember the details at all, but it might be formulated so as not to soften the leather.