What can be done to preserve my old seats. There original black vinyl been sitting sense 1982 no rips and they are still soft.

I just cleaned the seats in my '64 Galaxie 500 that hadn't had a deep clean in over 25 years, vinyl was in great shape, just dirty. Used this product from Meguires (#39)and then finished it off with the product they recommend.(#57)
http://www.goodboatgear.com/detail/6979/%20Vinyl⁄Plastic%20Prep
I purchased the cleaners from the site listed in the link and had no problems with the order. The seats came out GREAT and only used a small medium bristle scrub brush to get the grimey areas and stitching clean.
The #57 product puts a nice finish on everything w/o being too shiney.
I used two bottles of the prep/cleaner and one bottle of the finish to do a BIG old car interior with some left over.

That looks like some good stuff THANKS