my 93 740 runs great and doesn't seem to use any oil or coolant, but if I don't drive it for an extended period of time(over 4 days) all of a sudden there is a very small amount of oil and coolant on the garage floor. I haven't had time to look exactly where it is coming from due to my back surgery last week. has anyone heard of this problem. I guess I am at fault for not driving it enough.