Mercury - Quicksilver Oil Filter Engine Lubrication System Corrosion-Resistant Steel 19485. Overview. When you're running a diesel-powered MerCruiser, keeping oil clean is everything. The Mercury Marine 19485 Quicksilver Oil Filter is built specifically for MerCruiser diesel engines, using advanced filtration to protect against wear, corrosion, and oil breakdown. Designed with M-Pleated media, a heavy-duty steel shell, and an anti-drain back valve, it delivers the kind of dependable performance