Ballistol   A Firearm product. Been around since the early 1900’s
http://www.ballistol.com/

Leather on your MC.

I use the 16 oz liquid, and cut it with 1/2 Mineral Oil.
And use the cut solution,  in a spray bottle.
It does, Leather, (saddle bags, Jackets, Gloves, etc)
Far better than a, ‘armor xxx ‘ product.
(And FAR, Cheaper, than any, ‘Leather Conditioner”, product).
perhaps you will like it.

Gun Shops will have it, or go on line someplace.

I Mention this now, because today, I did my, 'Semi-Annually', cleaning of the MC.