brrgrr

I'm not a huge believer in these additives, but I bought a quart of this stuff the other day on a flyer, and I've got to say - it has really made a difference in how the car is running. Much smoother, quieter, and better mileage. I noticed the same thing with my wifes Lexus and the M3 as well. A $10 quart treats ~100 gallons of gas, so it's not a huge investement.

Campbelljj

Best product on the market. I use every 7 tanks or so. Buy a gallon and you will save a bunch.