Would not recommend that. While it has a pretty long shelf life relatively speaking, it still will spoil/go rancid...
Its great stuff no doubt. Eventually it will spoil though...its a vegetable oil. I cook with it quite a bit and have seen it go bad plenty of times. Whether it is absorbed into the leather or not wont affect that, imo. Especially if your car sits outside in the summers, heat+oxygen is terrible for it outside of cooking.It's an all natural oil with many great benefits. It absorbs into the leather not sit on top of the leather. Spoiling/ go rancid is practically a non issue.
Will these products like Lexol and Zaino take care of light scratches in the leather as well or is there something specific you all use?