The folks over on Powerstroke.org are talking about using Leather Honey to heal the dry, cracked leather seats in their trucks. Here’s one comment we loved, from user TampaSteve:
Do a search for Leather Honey. Found at tack stores or very fine leather shops. A lot goes a long way. Tried Lexol. Leather CPR. Mink oil. But couldn’t get the spot on the drivers seat that gets rubbed pretty good when getting in and out to soften up and return to original condition until I used Leather Honey. Just have some time because it needs a minimum of two hours dry time before use and overnight is better. Hopefully you can find a local source for it, otherwise will have to order online. I did my seats front and rear and all leather trim and used about 2oz of product. 8oz bottle cost me $16 and well worth it.