Here's the MB filter mentioned above... plenty available! Only $5.99 w/ free shipping

http://www.ebay.com/itm/MERCEDES-BENZ-OIL-FILTER-C-CL-CLK-CLS-E-S-SLK-G-ML-R-/280649449570?pt=Motors_Car_Truck_Parts_Accessories&hash=item415802c062&vxp=mtr