Hihi I noticed that my 90 740 started getting a noise when I get above 50mph that intensifies with speed,with the car even shaking at let's say 60/65mph. The noise comes from the front of the car. If I shift to N and accelerate no noise,no vibration and the same in P and revvin up to 3,000/3,500rpm. Today I found to oil marks in my driveway opened hood and found oil spill all over the front into hoses,around oil dipstick, into the electric fans even in the cover of hood. Took out dipstick,checked level and found out it was well above the Max level. I had oil changed a few weeks ago...could this be the cause of noise,vibration?What should I do?

trust the dropouts that change oil at jiffy lube etc or even at the dealer. I had to stop letting them do my oil changes because of overfilling, underfilling, dents in the hood where they slammed it down when it didn't shut the 1st time, somehow managed to lock my pickup into 4 wheel drive when they were under there. These places are like a plague.

If in fact one were to drive out of one those places and had a real problem caused by them I'll bet they would never take responsibility for it. Never.

Chances are it came out the dipstick tube, it will blow out and shoot oil everywhere if it is overfilled or your flame trap is clogged. You didnt state Turbo or Non Turbo, the Non turbos had the flame trap honeycomb thing that can get clogged.
I find it hard to believe it was overfilled 3 weeks ago and is just now giving you trouble, an overfill condition would spew oil everywhere right off the bat.

Youve already determind why you had an oil spill on your driveway so you can ignore that for the moment, Id be more concerned on where the oil left the engine then anything at this point.

More information on your issue will help in diaging it, first thing to do is make the best determination on where the oil came from! Check Your Dispstick, is the hood saturated above the dipstick? are your flame trap hoses all still connected? ( non turbo model ) Turbo models just have hoses where the flame trap is. Did you blow out a Freeze Plug?

Does the oil on the dipstick appear normal and smell like oil, or does it smell like fuel? If oil, take it back to the change place, it appears they overfilled it.
Oh, it'd be nice to use comma's, makes your prose more poetic. Kinda hard to read there, you know?
Today I found to oil marks in my driveway opened hood and found oil spill all over the front into hoses,around oil dipstick, into the electric fans even in the cover of hood.
I think this says you found (2) spots of oil in the driveway. Then, there was oil all over, including on the hoses and even into the electric fans? Both, including the one behind the grille, the pusher fan?
If the car still runs, maybe take it to a car wash and try to get some of the oil off, and see where there's a leak. Maybe a seal has popped out?
Hard to tell about the vibration being related, don't have a guess there just now.

Sorry about my writing...Anyway, I took some oil from the engine,brought it to correct level and problem solved. Tku.