Have just purchased a 1991 190E 6-cyl,am planning on changing the oil very soon but can't seem to locate the filter or filter canister location.Purchased a Purolator filter for this vehicle,is a standard screw on external type.Am a bit puzzled,wondering if anyone can help me with this.

 

on the rear of the intake manifold. between firewall.

 

Found it...Thanks for the help!