Mark20 Original poster Member Dec 6, 2011 1,630 Jun 16, 2012 #1 At least for GM's typically vertical mounting of the oil filter with the threads at the top, is an anti-drainback valve really needed?
At least for GM's typically vertical mounting of the oil filter with the threads at the top, is an anti-drainback valve really needed?
Wooluf1952 Member Nov 20, 2011 2,663 Milwaukee, Wisconsin Jun 16, 2012 #2 I would think any time the filter is higher than the oil pan, you would need the anti-drain back valve.
I would think any time the filter is higher than the oil pan, you would need the anti-drain back valve.
