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Do WIX Oil Filters Have an Anti-Drain Back Valve?

Last updated on October 1, 2022 @ 9:29 am

Yes, WIX oil filters have an anti-drain back valve. This valve is located in the oil filter housing, and it prevents oil from draining back into the oil pan when the engine is not running.

PRO TIP: If you are thinking about using a WIX oil filter, be aware that they do not have an anti-drain back valve. This means that oil can drain back into the engine when the vehicle is not in use, which can lead to engine damage.

The valve is opened and closed by a spring-loaded plunger, and it is held closed by a check ball. When the engine is not running, the check ball seals the valve and prevents oil from draining back into the pan. When the engine is started, the oil pressure opens the valve and allows oil to flow into the filter housing.

Kathy McFarland

Kathy McFarland

Devops woman in trade, tech explorer and problem navigator.