To add onto this. You have to realize that the additives that work are already in quality oils. That's why people buy good oil for high performance cars.
Don't take it personal. Some of these guys think they're in Mean Girls. A few of them actually know these cars really well though. Look around and you'll know who to trust and who to laugh at
Anyone ever have the navigation just jump very far away and stay like that? On the way to work today the navigation thought I was in a different county. On the way home it just moved slowly away from work going a different direction. Anybody got a clue how I can fix it?