Most People also dont need a Expensive coil over Suspension, better brakes or stikier Tyres on their car. Or a upgraded Stereo system.
Everything is fine, working and tested in Original condition, when the car is in the Showroom of the dealer. Why Change?
Because we like to do so. And because often it´s better than OEM.
And now? OTS oil from Walmart or the real Deal PAO+Ester + a very robust add pack from Red Line?
VOA of the Redline:
https://oil-club.de/index.php?thread/1620-redline-5w-40/
Is there any harm beside the hole in the wallet when one buy the best oil he could find compared to cheaper OTS oils from Walmart?