Does it contain teflon? Yecch if it does. Slick 50 hit it big way back when for proving that adding it increased hp. Wellllll, it did, kinda. Once the teflon collected itself up that increase disappeared. Besides, oil is the best lubricant for engines, not teflon.

Only other experience is Lucas oil stabilizer. Met Mr. Lucas at a meet and greet with Kenny and Brandon Bernstein. He convinced me to put it in my drag car and said it'd pick up et and lower the engine oil temps. Proved to be correct on both counts. Also put it in high mileage vehicles with cold start rod knock and smoking issues. Worked there also. Truly impressed with the product.

I have no experience with any other additives. I do know the additive package in the name brand oils is truly superior if they're labled "SM".