Hello together, I intend to drive my car (Hyundai Ioniq HEV) as long as possible, so I want the car to always look as good as new. I possibly intend to buy an eccentric polishing machine from KUNZER 7PME15 . But now my questions: What do you think is better? 1. The processing by hand with polish (then grow / seal by hand if necessary) 2. The processing with the above mentioned eccentric machine with polish (then grow / 3. Can I still use my old Nigrin polish as a polish? (this is certainly 15 years old). I once pictured this in an example photo. Normally polish does not age, but are these also suitable for machine use with the Eccentric Polishing Machine? P.S. I once had the Fiat 500 C professionally prepared. The result with the preparation was already great. But : The preparation also has including interior care, so complete This is why I protect my car as often as possible with this Kayme tarpaulin/car garage, because the car is more outside. Thank you for your opinions on the subject of manual/machine/with old polish possible? Best regards