I just bought a new steering wheel for Red Bull to replace the W126 unit with the loose grip at the top and bottom. For $100 it's in very good condition but it was in dire need of some TLC. After a wash with some mild detergent, I'm letting it dry out. Once dried I'd like to coat it with something to bring back the old lustre, soft touch and deep black (it's rather dried out looking). So.... what do I use apart from Amorall (which I refuse to use)? Silicon? Leather protector? Olive oil?