Dry Oil Filter
- Thread starter Warstud
- Start date
I'd more likely to believe that the bypass valve malfunctioned initially or at some time during usage. Can you molest the valve to make it drain the oil? Into a clear clean open pan like an milk jug cut in half? That way if it was clogged you would probably test the oil for grit or metal shavings, just to be thorough..
Post results!
Post results!
If you held a couple inlet holes open and no oil subsequently drained out, likely compromised adbv at some point.
Depending on orientation, be odd to have no oil whatsoever drain from the filter upon removal. Cut it open and check out the internals.
Depending on orientation, be odd to have no oil whatsoever drain from the filter upon removal. Cut it open and check out the internals.
Filter mounted holes up.
No oil at all in filter mounted in that orientation, as noted, odd. Still possible a worn out/failed adbv.
If it were really full of dirt I believe it would feel pretty heavy vs a new filter.
As discussed many times in this forum, a bad ADBV can still allow the oil to drain out of the oil filter because all the oil above the level of the oil pan wants to drain back to the oil pan due to gravity. It's been a misconception forever that a filter mounted vertical with the base up doesn't need an ADBV ... but your situation just proved that's not the case. A dry filter when it's removed as nothing to do with the filter bypass valvle.
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A bad ADBV can let oil siphon out-did it have startup noise, or slow to build oil pressure on a cold start?
