I just bought this 1994 325i e36 it's a great car have all records on work done. However, I just checked the oil yesterday -No indication of Car Low on oil- and it was low I added 3 qts which measured to top mark on the dip stick and today I checked the oil and it was low just under the top mark of dip stick. There are tiny drop marks of oil on the floor nothing serious. Now I am wondering if the car is burning oil or if it is leaking while car is running and hot? Any thoughts?