Ask Your Stickiest Question. . . Or ask us something you’ve always wanted to know about using our products. We’ll sort through all the submissions and present the best questions to our automotive experts. We'll share the questions and their answers here.
Question:
Do Oil Filters Have Check Valves?
Do Mobil 1 oil filters have check valves? My filter is installed with the drain pointed down and so I want a filter with a check valve to minimize how long the engine is dry after starting.
-- John Thiessen, The Woodlands, TX
Answer:
Anti-drain valves are installed in the filters for those vehicles where the manufacturer requires it.
