SkyActive 2.5 na filter
- Thread starter DCDG
- Start date
For my friend's CX-5 I maintain.. I found it interesting that Mazda doesn't have the ADBV at all on their oil filters. I wondered if it's a flow issue or it's because the filter is already mounted vertically as to not need one.
That's basically what I read across the internet that by design the ADBV is not needed and there could be potential issues with the ADBV during a cold start either restricting flow or getting torn/ripped caused by the SkyActive higher compression.
How does high compression affect the oil filter?
Having an ADBV when not required will not be a problem 
We don't see ADBVs (even nitrile rubber ones) all torn up and ripped from doing cold starts in the dead of winter. If that happened it would happen on any oil filter. And if a positive displacement oil pump can't overcome a minor flow resistance of a rubber ADBV, then Subaru better hire some better design engineers, lol. Engine compression has nothing to do with the oil filter functionality.
That's what I was wondering myself unless what the poster meant on a Mazda forum the high rpm during a cold start up
Are you sure the COR6607 doesn’t have the combo valve, which functions as both ADBV and bypass valve? Many lower end Frams & Champions had them.
No problem using 6607 filters.
I don't put a lot of mileage on my but I've two filters with an ADBV with no engine failures yet!
No engine is going to care if an oil filter has an ADBV. The minuscule flow resistance a rubber flap puts on a positive displacement oil pump (probably a few tenths of a PSI) doesn't matter as the pump will still force the same amount of oil through the filter and engine oiling system, If a PD oil pump wasn't pressure regulated, it could produce enough pressure to blow out the filter base gasket and other pressurized seals in the engine.
Used cheap dealer filters for 70k miles, then switched to 7317 on 2.0 skyactiv.
Fram XG and then Carquest Premium.
Fram XG and then Carquest Premium.
was your dealer not using the oe filter? The oe are actually good and well constructed filters.
I was buying filters from the dealer when they were $4 each. When their price went to >$10, there were better options.
PE01-14-302A-MV
IIRC the dealer carried two options, and the part number (above) was the cheaper. Came in clear plastic, no box.
I think with new cars revving to around 2k rpm on almost every cool/cold start, even a totally drained filter and oil passages are filled in well under 1 second.
I imagine on some engine, somewhere, with a stop start system, that has some poorly designed or manufactured oily part that does get a touch more wear if the oil filter and passages drain partially in a longer off period at a light, but I imagine most engines have no issue with a half second longer of no oil pressure. I believe most of the very thin oils seem to have some additives to perform well at near boundary lubrication events, like frequent start stop usage?
I imagine on some engine, somewhere, with a stop start system, that has some poorly designed or manufactured oily part that does get a touch more wear if the oil filter and passages drain partially in a longer off period at a light, but I imagine most engines have no issue with a half second longer of no oil pressure. I believe most of the very thin oils seem to have some additives to perform well at near boundary lubrication events, like frequent start stop usage?