Carquest Premium 85334 Cut Open

[RooflessVW]

Was in service for 2k miles. Van hit 6k so I did another change and reset the monitor. Will probably run until 10k miles and then do 5k intervals thereafter.

Was surprised to see less media in this can vs the 84356. I also like the bypass design on that filter better. Will continue using the CQP 84356 or Bosch 3323 moving forward.

 

[OVERKILL]

Some of those louvres look pretty closed off.

 

[RooflessVW]

Some of those louvres look pretty closed off.

Oil still in them makes it look weird in the photo.

All of them were open more or less the same.

Edit: I used to use a flashlight to show the louvers. Next time, I promise.

 

[53' Stude]

Looks pretty good. I’m guessing same oil and filter back in and on?


Thank You

 

[RooflessVW]

Looks pretty good. I’m guessing same oil and filter back in and on?


Thank You

Nope, back to the 84356 for this and the next change at least. Castrol Edge HM until I run out.

 

[ZeeOSix]

View attachment 87288

Looks like a Purolator style bypass valve.

 

[RooflessVW]

Looks like a Purolator style bypass valve.

What about the valve in the 84356? I like it better:

 

[ZeeOSix]

What about the valve in the 84356? I like it better:

Another Puroltor bypass spring design (the "flat spring"). I like the coil spring better.

 

[RooflessVW]

Another Puroltor bypass spring design (the "flat spring"). I like the coil spring better.

The coil spring felt like it would open at spec.

The flat one was very difficult to crack open. I prefer less bypass, as long as the filter doesn't tear. The 84356 that I just put on will see at least 4k miles.

 

[ZeeOSix]

The coil spring felt like it would open at spec.

The flat one was very difficult to crack open. I prefer less bypass, as long as the filter doesn't tear. The 84356 that I just put on will see at least 4k miles.

The force required to open the bypass valve depends on the PSI setting, and also on the area of the valve the pressure acts upon. Many years ago, someone proved the flat spring opened at the setting it was advertised at. But I still like the coil spring design.

 

[Sayjac]

Nice! I'll bet put a light down that center tube to confirm, all good. Sometimes I'll take a flashlight pic just as back up. As for using the 84236/3323 going forward, imo gain in oil filter volume of topic insignificant to former. And Zee06 found less media in PL14459 (same as topic) years ago. Seems I might have too, but I can't remember for sure. I've had very good post use anecdotes on Hondas/Nissans with Bosch Premium 3323 and I've been able to find them at a very reasonable price.

As for flat spring bypass, as mentioned years ago a member here, AuthorEditor did an excellent test on one and found it to work exactly as designed, at spec. Based on that, I have no hesitation about using filters with that design. I managed to find his test thread and linked it.

Purolator dome-end bypass pics

Since everyone loved the thread about the Motorcraft thread-end bypass valve I thought I would share some pics of a Purolator dome-end bypass valve from a recently cut PureOne PL24651 (equivalent to a FL820S). Three things struck me. First, the spring is really hard to open--couldn't pry it up...

bobistheoilguy.com

Thanks for c&p.