BSIAB
I know one of the pioneers in oil analysis.
He analyzed every oil additive out there, and found that at BEST, they did no harm. NONE did any more than good quality motor oil. Many actually are worse that good quality motor oil.
He called all of the BS In A Bottle. And offered to sell anyone his own REAL BSIAB, collected from REAL bulls.
Do what you want, but according to people who know, none of them are worth the time it took you to read the label.
Show me your tangible data that STP works better.
All that data is on the internet tested by a third party. STP have been known for many years to reduce metal on metal friction.