Quote:
Originally Posted by Goldenstate
Do not be afraid to try synthetic lubricants in the transmission and rear end. These two areas can make a nice dent into better mileage.
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Synthetic lube in the engine can also make a noticeable difference in fuel economy. Last November, I switched my Mustang from Motorcraft 5W-30 semi-synthetic blend to Mobil 1 0W-30 full synthetic motor oil. I made it through this past Winter without dropping below 30 MPG. That's never happened before.
