Not sure when Cummins came out with the 6B but probably weren’t many ADBV’s in use or even in production at that time. They keep changing these engines with new technologies and so called improvements and until 25’ use the same design for the oil filters that they started out with. They had a reliable engine with the solid tappets but the introduction of roller hydraulic lifters just added more points for oil drain down that have to be refilled every time they are started.
ADBV (Anti-Drain Back Valve) Question ?
- Thread starter OLEJOE
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Yours doesn’t take a cartridge filter though. I’ve looked for an adbv on a Toyota housing and there is none. A permanent adbv may be made for some housings on some makes, don’t know, or how it would be made. It would have to be metal.
Correct it doesn’t. What it does have though, is a hydraulic valve train that has to reprime every time it is started and I think an ADBV might eliminate some of that while having no adverse effects. Cummins came out in 25 equipped with a cartridge filter and housing. From the videos I’ve seen, the housing has to be drained during filter replacement by raising the filter element and allowing it to drain before removal. This tells me that Cummins decided after 5 years that draining the oil system every time it was shutdown might be 1 of the reasons for the lifter failures they have been having. They have still not come out with a fix for this issue yet.
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Come on man, you too can have typewriter/marble sounds with your 6.7!
Mine sounds terrible at almost 19k miles (not blaming adbv).I know right ? Mine is quiet except when it’s started after sitting. When cranked cold, it rattles pretty good for about 10 seconds then gets quiet. I have almost 30k miles on mine now and it’s running better every day. I think if I can stop the leak down, it might help.Come on man, you too can have typewriter/marble sounds with your 6.7!
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Could the large oring be the adbv?
https://www.genosgarage.com/product/ram-fleetguard-oil-filter-cartridge-lf16453/new-products
I think that the fact that it can’t get air in is what holds the oil in.
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There is air over though on the filter outlet side up in the engine. It does want to drain down. Maybe siphon down in this case.
I know that the fuel filters work in the same way. Opening the drain, only a small amount of fuel will run out until you break the vacuum on the filter by pulling up on it. Once it breaks the seal, fuel pours out emptying the filter and the housing.
Never claimed it did ... I was making multiple comments in that post since the discussion is ADBVs. Then commented on cartridge filter setups specifically. Later model year Tacomas did use a cartridge filter however.
If you Google around you can find instances of what the ADBV looks like in a cartridge filter setup on some engines. Do they all have one? ... who knows for sure, but they ideally should have one, especially on setups where the cartridge is located on top of the engine. Here's one example. And the ADBV in a cartridge filter setup are typically replaceable. I found instances of the replacements for sale.
https://www.bimmerfest.com/threads/m62tu-oil-filter-anti-drain-valve.1286952/
No ... that big O-ring on the outside end is to seal oil from leaking past the end cap. It's an O-ring, not a check valve, which is what an ADBV is in a cartridge filter setup.