Originally Posted by MuttGrunt
No. A Proper leather cleaner shouldn't leave ANYTHING behind. The only thing you should put on your leather after a proper cleaning or when it is new is Leather Master Protection Cream, GTechniq L1, or LTT Leather Protect, or equivalent water-based sacrificial barriers.
Have you ever used a steam cleaner to clean leather? I don't mean steaming the leather directly, but steaming through a MF towel. I tried this on the leather on my DD Accord, and the MF cloth ended up "lifting" a good amount of grime. And my car is not at all dirty. I did the seats and steering wheel. The steering wheel especially felt like it was brand new, when I was done.