Anyone here ever run a smaller than spec filter?

[53' Stude]

I was pondering this since I have some 4967 sized filters. Would it hurt anything to run a 4967 on the 02’ Dakota or my 11’ Focus?

 

[pbm]

I also have a few 4967 sized filters for my 2008 Corolla and have also 'pondered' whether I could use them on my Focus. The gasket on the 4967 sized filters seems to be on the edge of the baseplate so I won't chance finding out if they'll leak...OTOH I wouldn't be nearly as concerned running the Focus spec'd filters (3614 sized) on the Corolla...the gasket seems to seal well on the Toyota's baseplate (and other BITOGers have done it w/o issues.)

 

[JunkdrawerDog]

I've run 6007s in place of 7317 just because I got a bunch of them for very little money.

 

[JeffKeryk]

Is it really that much smaller? My guess is, it makes zero difference.

 

[EvoMan]

I believe in running the largest, most efficient filter that works for your applications. There is a downside to using a smaller filter.

Post in thread 'Filter Efficiency: when small differences aren't small'

Feb 28, 2025

1) The ISO standard seemingly uses whatever test flow rate the filter OEM asks them to use. How do you know one filter maker isn't using a wildly different flow rate than another for the same nominal filter? What if one OEM for a typical Honda spin-on says to use 3L/min and another says to use 5L/min? The test duration and injection rate are all scaled to these nominal flows which are not controlled by the standard. By my reading, there's nothing in the standard the precludes a filter manufacturer from sandbagging the test by using a lower nominal flow rate, because face velocity (flow...

• Mewbs

• 

 

[Accent Abuser]

I've run probably 50 Pennzoil PZ 37 filters on my Hyundai, which are basically Honda size filters. The diameter doesn't fully cover the baseplate like a proper Hyundai type filter would. Never had any issue.

 

[The Critic]

A lot of jobber filters consolidate the 6607 and 7317 into the smaller 6607 size.

 

[Justin85114]

I've been using a 3614 size filter on a engine that calls for a 3600 size filter.

 

[pbm]

I've run 6007s in place of 7317 just because I got a bunch of them for very little money.

The 6607 is basically a shortened 7317.....you won't have a problem. What vehicle are you running the 6607 on?

 

[Mainia]

I remember my Honda Odyssey ran a VERY small filter on the V6, let alone to use it on a 4 cylinder.

 

[OVERKILL]

I believe in running the largest, most efficient filter that works for your applications. There is a downside to using a smaller filter.

Post in thread 'Filter Efficiency: when small differences aren't small'

Feb 28, 2025

1) The ISO standard seemingly uses whatever test flow rate the filter OEM asks them to use. How do you know one filter maker isn't using a wildly different flow rate than another for the same nominal filter? What if one OEM for a typical Honda spin-on says to use 3L/min and another says to use 5L/min? The test duration and injection rate are all scaled to these nominal flows which are not controlled by the standard. By my reading, there's nothing in the standard the precludes a filter manufacturer from sandbagging the test by using a lower nominal flow rate, because face velocity (flow...

• Mewbs

• 

Yup, same here.

 

[JunkdrawerDog]

The 6607 is basically a shortened 7317.....you won't have a problem. What vehicle are you running the 6607 on?

I ran them on a 2010 Accord and a 2016 HRV.

 

[JeffKeryk]

For Hondas, I started using the Premium Guard PG4612EX, which is shorter than the Honda, aka 7317, filter.

 

[JunkdrawerDog]

For Hondas, I started using the Premium Guard PG4612EX, which is shorter than the Honda, aka 7317, filter.

I've used the aforementioned 6607 and a shorty version of the EcoGard. I can't remember the number. I got a bunch of the 6607 during a Walmart clearance.

 

[skyactiv]

There is a YouTube video on the Taryl Fixes All channel of someone that ruined a Kohler engine on a zero turn that used a smaller oil filter meant for a different Kohler engine. Worth a watch if anyone can find it.

 

[SubieRubyRoo]

I believe in running the largest, most efficient filter that works for your applications. There is a downside to using a smaller filter.

Post in thread 'Filter Efficiency: when small differences aren't small'

Feb 28, 2025

1) The ISO standard seemingly uses whatever test flow rate the filter OEM asks them to use. How do you know one filter maker isn't using a wildly different flow rate than another for the same nominal filter? What if one OEM for a typical Honda spin-on says to use 3L/min and another says to use 5L/min? The test duration and injection rate are all scaled to these nominal flows which are not controlled by the standard. By my reading, there's nothing in the standard the precludes a filter manufacturer from sandbagging the test by using a lower nominal flow rate, because face velocity (flow...

• Mewbs

• 

The 6607 and/or 7712 is a disgrace to the M20x1.5 crowd.

 

[Lawnman23]

There is a YouTube video on the Taryl Fixes All channel of someone that ruined a Kohler engine on a zero turn that used a smaller oil filter meant for a different Kohler engine. Worth a watch if anyone can find it.

 

[ZeeOSix]

^^^ If going non OEM filter, use the longer models of filter if possible, or a Purolator that has the flat spring bypass valve.

 

[Chris142]

The toyota filter for our FJ is about 4.5 inches tall. The parts store replacement is about 3.5 inches tall.

Years ago my truck called for the ph8a and I used a ph16 several times because I had one on hand.

 

[Fair enough]

Whip City has been compiling media sq. in. inside the can, which is what counts, not the size of the can. I guess the question is using the same filter make and model line, like size 3614 Fram Ultra versus 3600 size. I tend to use a larger version if there is one. Wanted to clarify as different brands have different amounts of media in the same size can.