Kowboy17
Full Access Member
If definitely is a higher strength material and the valve is a silicone anti drain back valve. I haven't compared it physically but it works great. Similar to the valve on my GTI oil filter.
O.K., it's what I thought. It's the same anti drain valve that's in most filters now days. The best brands use silicon. I wouldn't count on oil not coming out when unscrewing it though...lol