oil drain valve Archives - UnderhoodService
VIDEO: Why Do Oil Filters Have Anti-Drain Back Valves?

For spin-on filters, it’s a rubber-like membrane on the inner side of the can. This video is sponsored by FRAM.

NAPA Offers EZ Oil Drain Valves Nationwide

The EZ Oil Drain Valve replaces the stock oil drain plug on any vehicle, making oil changes easier, cleaner and faster, according to the company.