I have a pair of elephant boots that I’ve had for awhile, and I think I need to oil them. They are starting to get a little stiff, but they limber up after a couple minutes wear. Not sure what to use, I’m not worried if it darkens them some as these are my riding boots, I live in far west Texas and I like them for their toughness against the mesquite and other assorted sticker bushes. This is my first time around exotic leather so I’m worried I’ll break them somehow. Any advice is appreciated.