I bought a 2014 Used EX-L AWD Honda CR-V with about 5000 miles. It now has 8000+ miles. From the first week or so I noticed a whine that seems to be related to 1) the speed (40-60 mph) and 2) a very light pressure on the gas pedal. I usually can drown out this very annoying sound by turning up the radio (horrible solution) or driving at higher speeds (also NOT a good solution) where the road noise seems to overpower the perception of whine (CR-V is much noisier than what I was previously driving - a Toyota Camry). Honda dealer tells me all is fine - its NOT! What do do? I paid for a transmission oil change - no change in noise. Should I have the differential looked at? Car is still under warranty. Thanks.