I have a pair of leather seats I recently bought and installed in my car (they're from a later model 240sx, but bolt right into my '91). Now to my point: They sat uncared-for for about 3 years, no conditioner, nothing. They were exposed to the sun and allowed to harden. I have Meguiars Gold Class rich leather cleaner/conditioner. I've used it on the seats once so far with decent results.. My question is this: Is mink oil a viable solution to help soften the leather? I have some mink oil and saddle soap which I was thinking about clenaing and conditiong the seats with.. If not, should I just continue using the Gold Class until they soften?