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Originally Posted by Highland Runner
I started using a Purolator Pure One that has a silicone anti drainback valve. These are better than the rubber and shouldn't leak. I think on Bobistheoilguy site there was talk of who supplied the Toyota filters. It seems you can get a number of different part numbers for the same vehicle. Some of the new ones may not be as good as the old ones.
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Take a good look at any spin on filter, and what do you see in the middle of it? A big threaded hole! When the 22RE motor is turned off, much of the oil volume in the filter drains out through this big hole, and the anti-drainback valve cannot prevent this. There is no anti-drainback valve on this big threaded hole, there is only one on the perimeter of the filter. Toyota's mistake was mounting this filter at a downward angle so that it drains most of its contents. The optimum positioning is vertical, with the filter opening pointing up.