The pods enable the boom operator to refuel two planes at once. After the boom operator establishes contact with the aircraft's fuel tank, the computer takes over. Up to 1,100 gallons of fuel flow through the boom per minute and about 470 gallons per minute through the drogue.
Car manufacturers often suggest changing oil filters every other time you have your oil changed. Most parts and oil manufacturers, however, say to replace oil filters with every oil change, which should occur every 3,000 miles or three months (whichever comes first).
+1, they get their money for maintenance from the cost of the car...also why they suggest oil change every 15k so they only do it 3 times. You can take it in sooner as most of us on here do, but the general public BMW owners dont know any better and do what the dealer says....