https://www.cumminsforum.com/threads/cummins-to-offer-combination-oil-bypass-filters.331176/
Same style filter is this
https://www.dieselpowerproducts.com/fleetguard-lf9028-filter-89-15-cummins
Info from another poster on how it works.
Spoke to Cummins (800) 223-4583 on three separate occasions with three different tech support people (Rosalie, Judy, and Jeff), and the Venturi Combo Lube Filter WILL work on our Cummins engines. In fact, the filter was designed specifically for the 5.9L engines used on Kubota and Carrier. These are NOT Kubota engines…they are Cummins 5.9L engines, and they are the very same engine in our Dodge trucks. The filter will also work for the 6.7L. The reason Dodge does not officially approve it is they felt they would not be able to recoupe the cost of paying Cummins for licensing of this product on their trucks. Or perhaps it is because the Venturi Combo it is an extended change oil filter, and maybe they thought they would loose money selling their conventional filters if they also sold this one. In any case, it’s a great product…screw on replacement approved by Cummins, no additional components to fail, no exposed external hoses, no parasitic pumping loss, no oil pressure loss issues, extended oil AND filter change intervals, and a clean simple install.
Here's how it works. Conventional bypass oil filters work by using the pressure differential from the high pressure side of the pump and the near zero oil pressure side in the sump (where the oil is dumped), which helps force the bypass oil through the filter medium. A negative aspect of this design is that the 10% of fluid used in the bypass side results in parasitic pumping loss (usually not a problem, but it can be). The Venturi Combo does not have any parasitic pumping loss because oil is not bypassed into the sump. It works by forcing the highflow oil through a venturi, which increases velocity, causing a pressure loss on the downstrem side of the stacked media section of the filter. This pressure differential pulls oil through the stacked media like a conventional bypass system. The "bypass" oil (it not really bybassed, since it reentered the engine instead of going into the sump) then enters a diffuser (expansion chamber) which decreases velocity, increaing the oil pressure back to its original level. Thus, there is never any parasitic pump loss…its really quite ingenius.
Cummins told me that the extended change interval is 5000 miles beyond what your owners manual calls for, then test the oil, and if it is still good, you can run another 5000 miles. I run Royal Purple, so my oil change interval is every 15,000 miles, and I change my filters every 5000. With this filter, you can also change your the filter once every 15,000 (I'll test it too). Less labor/time, and its cheaper in the long wrong. The best price I could find for these was about $32.24 from AgRepower. A Dodge standard filter costs about $12-13 each. Three of these (one every 5K) is $36, vs. $32.24 for one Venturi Combo. The part number is LF9028. Just google it to find some vendors. Here's the Cummins link for more info:
ual-Flow Lube Spin-on
