I have used Lexol on my VW Passat seats for 4 years now. It came highly recommended on a similar forum to this, but for Volkswagen products. Those people are nuts when it comes to detailing their cars. I have used both the leather cleaner and the leather conditioner. Makes your seats look brand new without that shiny-slimy feel. The conditioner is a water based emulsion of fats and oils that soak right in pretty fast.
It also works great for breaking in new ball gloves (being spring and all).
You can find it at most big auto parts places (Shucks etc.), probably Wal-Mart, but I hate that place. I rub it on with my bare hands, and I end up with a bonus of nice soft moisturized hands

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