Connely hide food has been mentioned and it the conditioner of choice often spoken of by Jaguar owners. An american product called Lexol is a very good cleaner and conditioner. Do not use Neats Foot Oil, prefered by horse saddle owners. The problem is that the oil will rot the synthetic stitching in the seats, even though it does a beautiful job on the leather. Also, IMO, avoid products such as Armor-All. Finally, leatherique is a great product.
Best regards,
Don