Just switched to Rotella SAE-5W-40 Synthetic this Sunday. Filled up the tank on Monday. My regular driving is 68 miles every day, same route in DC,VA,MD crazy traffic. Right now my fuel guage is pointing on the TOP of the middle line, not quiet on it. Usually I will have 148 miles when the guage is about in the middle but I have 168 miles 
. Is my fuel guage stuck? Or my gas mileage just got bumped 
. Has any one else experienced this after Rotella?
. Is my fuel guage stuck? Or my gas mileage just got bumped . Has any one else experienced this after Rotella?
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