Oil filter drain back valves | 4 Tips

If you have a vehicle that comes to your shop with valvetrain noise at start up, the solution might be simpler than you think. Many engines have variable valve timing, these systems need to have engine oil to operate. If the oil drains from the top end of the engine, the actuators and lifters will make noise when the engine is started. The cause could be a damaged oil drain back valve in the oil filter.

[corvairkid]

I just tested a brand new carquest "red", and Napa "silver" filter. Blowing in and out of the center hole. I could feel that the Napa filter's anti drain back valve seated very firmly, and took a good amount of force to make the ADBV unseat. Nice!

[rickss]

Loosing battle as you will never completely stop drain back. Too many ways for oil to seep out of the galleries eventually even if the filter housing was welded solid...it just is what it is.

[johnmcsweeney]

Correct me if I am wrong but the anti-drainback valve does not come into play with a filter that is mounted vertically.

[christiangelinas]

What i know is that all filter have anti drain back valve but not all work perfectly

[donparker]

Do they make a anti drain back valve filter for a hemi 5.7??? if they do what would the number be for the filter and can NAPA supply them

[Slowcarfastbeans]

0:58 Must be watching too many adult videos.