I have had no "frothing" of any kind whatsoevery in my car. I know how much oil I WAS consuming and the level has not budged. I was consuming at least one quart every 1000miles.

My highway mileage was much lower than the 28.5 I am now getting on the highway. I am positive of this.

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1982 300SD Light Blue
2002 Honda Accord SE
1974 Toro Wheel Horse Tractor
2000 Toyota Tundra Pickup