About 6 months ago, my car was using 1 quart for every 1000-1250 miles.

I started using Valvoline Max-Life 20-50 or Castrol High Mileage 20-50.

After 4 oil changes, (I drive a lot from NYC to Raleigh, NC) Can you believe it now uses 1 quart between changes (3000 miles)?

I do not work for either of the 2 oil companies.

Now I believe that oil does help the valve seals.

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1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
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