That's what I have too... but I thought I heard about a better product.
Maybe it was the lexol that Tex uses.
I am always looking for better stuff for the interior.
Lexol has been the long running best for the leather surfaces.
At the moment I am using a new product by 'Ice' for the other surfaces.
Side note, there is no such thing as pleather. That is sorta a joke.
The seating surfaces in our GT500's is leather.
The sides and backs of the seats is vinyl.
I believe the top of the center console and the pieces of armrest on the doors is leather.
The steering wheel and shift boot is leather.
On a GT Mustang and a SGT the rear seat is vinyl, although they tell you you have leather seating...it is only the front seats.
I am not sure if the door inserts on a GT500 are leather or not, I could tell if I saw the backing, but have not yet.
The thing to look for in choosing a conditioner for any surface is something that has a UV protectorant in it. AND DO NOT USE SUNSCREEN.
The worst thing for leather is hand creams and suntan lotion/oils. It breaks down the leather to a point it will crack prematurely.
The second worse thing is heat. Heat dries out leather, so in the summer you should treat it more often, and if you drive it daily ALWAYS leave a window cracked if parked outside in order to let the heat excape. A window sunscreen would be a big help also.
The heat issue applies in your house also if you have a fireplace. If you use your fireplace alot and have leather furniture you should treat the leather more often.
On the floor carpeting I keep the carpet as clean as possible and spray every few months with Scotchguard Protectorant.
Windows are a diffent story, I have tried many products and even the damp newspaper trick that detail shops do, but I'm not please w/ any of them. I am always left w/ a streak here or there.
At the moment I use windex and come behind it with a terry cloth towel to buff any spots.
If you have your windows tinted, you can NOT use any cleaner the has ammonia in it, it will destroy the finish. Windex does make a cleaner for such windows and so do other manufacturers.