Hi guys, i took a ride yesterday on my new to me 560SL, i noticed that de sedo was acurate but for some reason the odometer was very slow, i did 60 mph for a minute, ii did not get amille on the odo but more like .3, at that rate it took 40 milles to empty the tank, i read something about the gears on the odometer sliping, could that be what is happening, does this car use an electric spedometer? was it the last owner, now i know why only 66000 milles on a 1989 car.

Thanks