Quote:
Originally Posted by Eman
Why do people use a filter with an anti-drainback valve if their filter isn't mounted sideways or upside down?
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Hi,
If the filter is located higher than the level of the oil in the pan, it will seek its own level..
This is called the siphon effect and will empty the filter, oil galleries, lifters and everything else in the oil circuit and drain it to the oil pan..
Bob