mixed driving (wife slowly around town, me hwy 70-80mph) the average according to the gauge is 19.8

Great site. When a solution to the mistery moan has been found will you guys post it? We just bought a 98 V70R with 64K and it makes the moan on cooler mornings. Our noise is definately more of a moan than a whine, almost the kind of vacuum noise that the vent baffles make in an old 240 when changin...