VQ35DE oil filter questions

[INDYMAC]

The 2003 G35 3.5L V-6 engine uses a very small oil filter. The OEM Nissan filter has to be the smallest I've ever seen.
I usually alternate between the OEM and the Pure One 16412 filters (which appear to be a little bigger), depending upon where I have my car serviced. I don't have any technical data on either of these filters, but have come up with some differences in bypass pressure settings and Max Flow rates for others that I'm considering:

K&N HP-1008
Bypass 11-17 psi/no flow rate listed
Amsoil EaO12
Bypass 8-11 psi/no flow rate listed
Wix 51365
Bypass 8-11 psi/Max Flow 9-11 GPM

My first question is "why is the bypass spring set so much higher (11-17 psi) on the K&N over the others (8-11 psi)?". The bypass spring seems to be set at 8-11 psi on most of the other K&N oil filters too.
Also, I noticed that while the 8-11 psi bypass spring in the Wix was pretty universal for their product line, they list the 51365 as having a max flow rate of 9-11 GPM. Most of their other filters seem to fit in the 7-9 GPM range. So, my second question is "why does wix consider more flow to be important for the VQ35DE, and not bypass pressure setting?".

 

[Pete C.]

It's not that "more flow is important to us", it's that that is what that filter flows. The others flow 7-9 gpm.

Also, 8-11 psi is the point at which the valve starts to allow flow (8 psi) and the point at which the valve is at it's max flow (11 psi)

 

[INDYMAC]

Quote:

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It's not that "more flow is important to us", it's that that is what that filter flows. The others flow 7-9 gpm.

Also, 8-11 psi is the point at which the valve starts to allow flow (8 psi) and the point at which the valve is at it's max flow (11 psi)

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So there is no real intent or purpose to these oddball settings for the VQ35DE application? It's just what the filter manufacturer happened to come up with? I hadn't thought of that, but I guess it's possible.

 

[Pete C.]

Not the filter manufacturer, the vehicle manufacturer.

 

[98LSC32V]

You can use the Amsoil EaO13 which is bigger than the 12.

 

[Dominic]

the k&n has very little media. I can post pictures, I would not run it.

Your best bet is going to be the Purolator PureONE or the OEM filter. I would run the longer (Fram 7317) size. I believe its a PL14610 as opposed to the PL14612. Amazon has them on the cheap by the 2 pack with free shipping over $25

 

[SurgiLube]

I have the same engine in my 03 350Z. I have used Nissan OEM "larger size" filter (15208-9E000... spec'ed for Pathfinders and Titans) with good results. Although I recently read that Nissan has switched the internal of 9E000 filter to Fram spec design (cardboard end cap).
Purolator PureOne PL14610 is also good.(which is what I have on my Z right now). Haven't tried WIX filter yet, but will be trying it at next oil change

 

[ccs v2.0]

I'd use the Wix 51356 instead of the 51365. Better Beta ratios.