Hello all - my wife and I are planning to drive her 2002 MDX from Oklahoma to Arizona next spring. We're both seniors and look forward to it but also want to make sure the car is road ready. We plan on an oil and lube job before leaving, already have new rubber, possibly a tune up, AAA is up to date. I'll be doing the driving and am looking for ways to cut pennies here and there. Will the gas mileage improve if we switch out of all wheel drive, provided the weather is good? Thanks for any tips!