I Posted this on Facebook Today - I thought I would share my success with everyone as a result of using this product to improve MPG....I drove to Villanova PA and back yesterday in my 2011 GMC Terrain 4cly and received 24 MPG as a result of using this product. My city mileage before was 15 and highway 20. I now get 17 city and 24 highway.....Highly recommend this product.

Your mileage will vary depending on key factors like proper tire inflation, clean air filter, proper pcv valve operation and a good fuel with high detergents. This trip, I used SHELL Regular Gas. I have been using BP also with great results