Hello, I am looking for some help with my 2001 ml320. I have the "oil hi" followed by the oil light and -2.0l kind of at the same time or not at all, very annoying. I have seen some postings about sensor replacement. Before I dive in I was looking for a couple of tips Loctite 5900? is there a gasket I need along with the sensor? And is it really only a few hour job. Second the alarm for this car has started to activate about 2 minutes after locking the doors and setting the alarm with key remote. Any help would be greatly appreciated. Thanks