Helping lubricate valves, high mileage engines, increasing compression.all of the claims on the labels, are they true? Better yet, are they worth the money?
I'm not a big fan of any oil additives, just my opinion, of course. The only additive that I will ever use is Lucas, I have had good luck with all of there additives.
the only oil additive i know of that is worth the money is Lucas oil stabilizer. I have used it in my semi truck and in all my rear end gearboxes. I use Mobil 1 in my crankcase so i dont use it in the oil but if you are using a conventionl oil then it cant hurt, expecailly on an older engine.
I don't know if they're worth the money or not. I used to use STP oil treatment. Did it help? I don't know, but I had an old car at the time, and it kept running, and it ran well.
