Did the first oil chang on my LBZ '07 Classic today. Mileage is only 3500, but I wanted to change to synthetic. Even before I dumped the original oil, I noticed oil seepage along the bottom edge of the block where it mates to the bell housing. There's a little weep slot there. There was enough oil to be liquid visable, not just sort of oil moist, spread out for 5" along the bottom edge. Is this normal? My 8.1 stayed dry as a bone, but this is my first diesel. BTW, the oil that I dumped was black as ink. The oil filter took a gorilla tool to remove. And my best experience and tricks didn't succeed in making the oil filter removal a clean job on that horizontal mounted SOB.