[Perfectlap]

Have used to many products to list but my favorite is 1Z leather care.
Even when the seats looks spotless I will get out a terry cloth towel and apply the 1Z leather cleaner only to see the towel come up really dirty.
Leaves the leather clean and new looking not at all greasssy. Try openroadmotoring.com

If the leather has gotten really hard you can use Leatherique Rejuvenator.

For conditioning the Porsche Tequipment product is very very good.

p.s.
interesting, your trunk and hood levers are black and not silver.