dnewton3
Staff member
Originally Posted By: Hokiefyd
Something that probably does need to be said, however, is that engine lubrication system design is increasingly "non-conventional", and you can sometimes find filters mounted remotely or not on the bottom of the engine (such as the top-side filter location on Chrysler Pentastars and some Toyota 4.0L V-6 engines). Some aspects of this discussion may still apply, but not necessarily everything. You probably wouldn't have an oiling system trying to gravity flow back through a filter if it's mounted at the top of the engine.
Very true; agree with the example of the 4.0L Toyota V-6 in the Tacoma (and FJ?); it's mounted up at valve cover height, and upside down to boot (open end down). Kind of makes an ADBV just about worthless IMO. I do wonder if they have a secondary ADBV in the system somewhere down lower, to prevent drainback (not that familiar with the internal workings of that particular engine). The set up does include a very nice small catch basin and place for a drain tube, to reduce the mess when changing a filter; very thoughtful.
Something that probably does need to be said, however, is that engine lubrication system design is increasingly "non-conventional", and you can sometimes find filters mounted remotely or not on the bottom of the engine (such as the top-side filter location on Chrysler Pentastars and some Toyota 4.0L V-6 engines). Some aspects of this discussion may still apply, but not necessarily everything. You probably wouldn't have an oiling system trying to gravity flow back through a filter if it's mounted at the top of the engine.
Very true; agree with the example of the 4.0L Toyota V-6 in the Tacoma (and FJ?); it's mounted up at valve cover height, and upside down to boot (open end down). Kind of makes an ADBV just about worthless IMO. I do wonder if they have a secondary ADBV in the system somewhere down lower, to prevent drainback (not that familiar with the internal workings of that particular engine). The set up does include a very nice small catch basin and place for a drain tube, to reduce the mess when changing a filter; very thoughtful.
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