Hello,
Just an update on the situation for reference. After an intensive research and after consulting a friend mechanic who used to work for a Benz dealership, I cam to the conclusion that the pump must be replaced. Since the oil is coming from the back of the pump housing, then oil has gone inside the pump, which is not supposed to happen. All the internal seals inside the pump are not serviceable.
I hope this can be of value to other people here.
I will bite the bullet and get the C$500 pump in the morning to install. I'll try to post pictures later.
Just an update on the situation for reference. After an intensive research and after consulting a friend mechanic who used to work for a Benz dealership, I cam to the conclusion that the pump must be replaced. Since the oil is coming from the back of the pump housing, then oil has gone inside the pump, which is not supposed to happen. All the internal seals inside the pump are not serviceable.
I hope this can be of value to other people here.
I will bite the bullet and get the C$500 pump in the morning to install. I'll try to post pictures later.