I have SL500, 2002. The problem: ABC oil reservoir keeps throwing the oil up, even when oil is in proper level or under filled. every morning I see an oil spot on the floor exactly under the reservoir location. I have to refill the reservoir every two to three weeks. I can see the upper surface of the reservoir is full of oil even if I dry it, next day it gets wet. In addition, after parking the car for few hours I see the rear side lowered on both wheels, & when I turn the car on & start driving it gets high. Meanwhile, if I drive over a hole on high speed I get ABC red for few seconds, then it turned off. What are the causes of the above 3 issues?