Mark20 Member Joined Dec 6, 2011 Posts 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 Joined Nov 20, 2011 Posts 2,663 Location 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.
