im kinda new but what i use on all my work is the leather cleaner and conditioner by meguiars...not the store bought stuff though this you either need to order off their web site or i get it from my distributor. Its from their professional line and has a really nice clean scent that goes away quickly, and leaves the leather very soft and natural once it soaks in. Ive used the lexol and it is good but i like this better! Also just a side note, since porsche is known for alot of brake dust u may want to check out the wheel brightner they offer too ! It is BY FAR THE BEST wheel cleaner ive ever found! i just spray it on and pressure wash it rt off !