He said, "The four-valve oil drain-back system on the 4.6 motors is insufficient on modified engines because of the airflow in the crankcase simultaneously working against the drain-back holes on ...

There's a crap ton of variation between brands on things like gasket material, anti drain-back valve material, media material, spring type, end-cap material, and pleating number. I think I've ...

FILTECH filtration technology Silicone anti-drain back valve Leak-proof seal 14g dirt holding capacity Vehicle engine/trim level may affect fitment This Bosch Premium Oil Filter features FILTECH ...

Within the canister are the filter element, end caps, core, pressure relief valve, and anti-drainback valve. There are a lot of qualities that make a good filter element including pore size ...