Hi, new member but a long time Adam's user. I understand the leather seats in my C6 Corvette are of the "manufactured" type and they have a plastic coating. Recently I tried VRT on them and it worked out great, leather feels soft and smooth, not oily. Thought I would check to see if I could be doing any damage to the seat leather with VRT. I noted that the product description for VRT does not include leather surfaces. I have been using VRT on the plastic interior trim and dash with great success for some time.