So i checked again now briefly. Coolant level is unchanged, the coolant leak i thought i had was not a leak....

What i just found out is that the back side of the water pump pulley is a bit slimy and gooey... but since i am not loosing coolant, what could that be? could the pump stop spinning at a certain point internally? i highly doubt that...

Man changing the thing is going to be messy job....it still has warranty though...

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1993 300E, 2.8 M104 .....