Originally Posted by Barnsdale
I noticed a decrease in MPG when I started using it on my old E46 - it's recommended from my indy and seems to work so I keep using it with every oil change. For the price and what it does, I believe it's worth it to use. Just my .02
Decrease in MPG? hmm thats the last thing i need hehe. Did your engine seem smoother though? Im still on the fence, will see when i get closer to my oil change.