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Purolator PureOne PL34631

Cost $4.99 -- Meijer
ADBV material: Silicon
Spring type: leaf
Intake area: 0.440 sq/in (12 of 12)
Filter area: 330 sq/in; 62 pleats (10 of 12)
Total Weight: 470 grams (10 of 12)
Filter and endcap weight: 5 oz (5-10 of 12)


Physical Rating: 31 (11 of 12)

Average pore size: 24 µm (12 of 12)
Smallest pore size: 11 µm (12 of 12)
Oil flow @ 10psi: 4.7 oz per minute (2 of 12)


Pore and Flow Rating: 28 (7-8 of 12)



Overall Rating: 59 (10 of 12)

[Pure One pictures coming soon]

This filter appears to have excellent filtration capability and much lower than average flow.



Baldwin B1428 Baldwin Filters website

Cost $4.99 -- Truck Pro
ADBV material: Nitrile
Spring type: spring
Intake area: 0.319 sq/in (4 of 12)
Filter area: 413 sq/in; 68 pleats (12 of 12)
Total Weight: 500 grams (11 of 12)
Filter and endcap weight: 6 oz (12 of 12)


Physical Rating: 28 (10 of 12)

Average pore size: 31 µm (9 of 12)
Smallest pore size: 14 µm (8-10 of 12)
Oil flow @ 10psi: 8.1 oz per minute (6-7 of 12)


Pore and Flow Rating: 31 (12 of 12)



Overall Rating 59 (10-11 of 12)

This filter appears to have very good filtration capability and better than average oil flow.

Baldwin filters are more difficult to locate than household name brands. However, they can be found by locating a distributor on their website.

Here is the signature end plate of a Baldwin filter. There are five equally spaced intake holes.



Instead of having a neck for the ADBV to seal against, the Baldwin filter has a separate plastic ring that seals against the canister. The ADBV is large because of the large circle of intake holes.

Like the WIX and Hastings, the Baldwin also uses a spring to hold everything in place and puts pressure on the ADBV to seal it against the canister. The start and end sections of the media are held together by a metal clip instead of adhesive.



Here you can see the dense filter material and 68 pleats along with the Hastings-like metal inside canister.



WIX 51060 WIX Filters website

Cost $4.99 -- Local auto parts store
ADBV material: Silicon
Spring type: spring
Intake area: 0.393 sq/in (8-11 of 12)
Filter area: 305 sq/in; 60 pleats (6-7 of 12)
Total Weight: 460 grams (8-9 of 12)
Filter and endcap weight: 5 oz (5-10 of 12)


Physical Rating: 24 (9 of 12)

Average pore size: 37 µm (6 of 12)
Smallest pore size: 16 µm (6-7 of 12)
Oil flow @ 10psi: 8.1 oz per minute (6-7 of 12)


Pore and Flow Rating: 26 (5-6 of 12)



Overall Rating 50 (8 of 12)

This filter appears to have better than average filtration and flow and rates good to very good overall.

The WIX 51060 is the large brother to the WIX 51086. Other than the Fram TG5, these are the only filters with silicon ADBVs. However, the WIX ADBV is a much thicker valve than the Fram. The Fram TG5 silicon was more the thickness of the other nitrile valves.

The WIX endcaps feature eight 1/4" intake holes giving it the same intake area as the Hastings and K&N.



Here are the parts for the WIX 51060.





And the inside canister exposed:





WIX 51086 (small canister) WIX Filters website

Intake area: 0.393 sq/in (8-11 of 12)
Filter area: 185 sq/in; 56 pleats (3 of 12)
ADBV material: Silicon
Total Weight: 425 grams (3-7 of 12)
Filter and endcap weight: 4 oz (4 of 12)
Spring type: spring
Cost $5.99 -- Local auto parts store


Physical Rating: 17 (4 of 12)

Average pore size: 35 µm (7 of 12)
Smallest pore size: 16 µm (6-7 of 12)
Oil flow @ 10psi: 5.3 oz per minute (4 of 12)


Pore and Flow Rating: 22 (2-3 of 12)



Overall Rating 39 (4 of 12)

This filter appears to have better than average filtration and flow below average. However, regarding flow it should only be compared to the Mercruiser filter in this study because it has the same canister size.

This filter is physically similar to the larger canister WIX 51060 and is the direct replacement size for the Mercruiser 35-802885T.

Here is the baseplate:

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Mercruiser 35-802885T

Cost $6.95 -- Local marine store
ADBV material: nitrile
Spring type: leaf
Intake area: 0.297 sq/in (3 of 12)
Filter area: 182 sq/in; 56 pleats (1 of 12)
Total Weight: 425 grams (3-7 of 12)
Filter and endcap weight: 3.75 oz (3 of 12)


Physical Rating: 8 (2-3 of 12)

Average pore size: 52 µm (1 of 12)
Smallest pore size: 21 µm (2-3 of 12)
Oil flow @ 10psi: 13.1 oz per minute (10 of 12)


Pore and Flow Rating: 24 (4 of 12)



Overall Rating 32 (2 of 12)

This filter appears to have very good to excellent flow and low to below average filtration.

This filter has the same characteristics as other Champion made filters (the same as the AC Delco and STP). While it doesn't have a "1" marking on the baseplate, it has a "3" marking.

It has five equally size intake holes, a nitrile ADBV, and 182 sq/in of media. A leaf spring holds everything together.

Here is the baseplate:



Here are the internal parts:



Here is a look at the inside tube:





K&N 3002 K&N website

Cost $9.95 -- Advanced Auto
ADBV material: nitrile
Spring type: leaf
Intake area: 0.393 sq/in (8-11 of 12)
Filter area: 343 sq/in; 56 pleats (11 of 12)
Total Weight: 530 grams (12 of 12)
Filter and endcap weight: 5.5 oz (11 of 12)


Physical Rating: 32 (12 of 12)

Average pore size: 41 µm (4 of 12)
Smallest pore size: 19 µm (4 of 12)
Oil flow @ 10psi: 13.2 oz per minute (11 of 12)


Pore and Flow Rating: 30 (11 of 12)



Overall Rating 62 (12 of 12)

This filter appears to have lower than average filtration and excellent flow.

This filter is the heaviest at 530 grams. It has eight equally sized 1/4" intake holes. It has a nitrile ADBV and a leaf spring. It appears that Champion Filters also makes this filter.

This filter flows well and has is in the lower third for filtration ability.

Here is the baseplate:



The internal parts:



And the core:

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Conclusion

One must read the complete pore and flow discussion before drawing any conclusions.

In that discourse, the point is made that the oil used for the oil flow tests was at room temperature. Hot oil will flow many times the rate over room temperature oil.

Yes, it appears that there are better alternatives to the Mercruiser oil filter in this application.

While the pore and flow tests were very accurate, there are certainly imperfections in the rating system. Filters within two or three places of each other should be considered and their raw data scores evaluated. This data is described in detail in the pore and flow discussion.

Not surprisingly, filtering ability relates inversely to flow. However, many filters with high filtering ability compensate by having higher filter area.

For example, the Baldwin rates as 9 of 12 in pore size but 6-7 of 12 regarding flow. It also has the most filter area of all filters in this study. The Baldwin, AC Delco, and WIX 51060 all appear to be a good compromise between pore size and flow.

If one is interested in flow for this application, the K&N provides the best flow with better filtration than the Mercruiser filter.

If one is considering the small canister size because of physical room in the engine compartment, the Mercruiser and WIX 51086 have about the same filter area. The WIX has a larger intake area, silicon ADBV, and a sturdy spring to keep everything together. The WIX filter media is much better, but the Mercruiser flows better – among the top three in this study even though it has less media than all.

The PureOne filter has the best filtering ability of all compared filters; however, it has the second worst flow ratings. One would have to ask, “would the PureOne flow enough in this application when the manufacturers filter is specified to flow many times more?” That is the danger of using an oil filter that is not specifically mapped to your application.

In a direct mapped application such as an auto oil filter, the PureOne, AC Delco, Baldwin, and WIX would appear to be good choices (provided their media is similar in different applications). One would have to feel comfortable with the Fram cardboard end construction of the EG and TG series and low filter media area to choose them over these four filters.

In this application, a good compromise would be to use a full flowing larger sized filter such as the Mercruiser, K&N, Hastings, SuperTech, or STP and add a by-pass filter such as an Oilguard, Amsoil, or Motor Guard.

Disclaimer and cautions

Since many filter manufacturers contract out their filters, one must be careful that future filters from these vendors are the same as what is presented here. One way to do this is to compare the outside markings of new filters to these pictures.

Just because one filter appears to be a good choice for this application, does not mean that it will be the best for other automotive applications. Other applications involve by-pass valves and other features that may or may not make that same filter the best choice.

Be sure to check your application. There is no guarantee, express or implied, that these filters will work in your application.



Additions / corrections since original publication

January 28, 2004

· Fixed error in pore and total rating system in both .xls file and main document. Raw data did not change. Some filters changed position by one ranking. Some stayed the same. One filter changed by two rankings. As mentioned in the summary, filters that are within 3 positions of each other should be considered very similar. This rating system is a rough attempt at trying to establish a ranking system by weighting different filter attributes.

January 25, 2004

o Added pore and flow data. Added link to pore and flow detail report. Added introduction regarding pore and flow data. Added ranking numbers. Removed first person narrative. Modified conclusion to account for pore and flow data.

November 20, 2003

· The can height of the two WIX filters was swapped in the merc.xls file. This has been corrected.

November 19, 2003

· The original publication had filter area half of what it should have been. This has been corrected in this document as well as the merc.xls file. The area was indicated as one pleat times the number of pleats and it should have been times two again since each pleat count has two sides to it. Since everything was half of what it should have been, it still kept the comparisons between these filters equal.

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Additional Notes

· The Merc 35-802885T has a twin sister as the Quicksilver 35-802885Q. It should be an identical filter only with a white canister.

· The Pennzoil Z3 filter is the cross reference to the Merc 35-802885T. The outside baseplate is exactly the same as a Fram Extra Guard. If you are using the Z3 filter, expect it to be identical to the PH6606 filter (smaller version of the PH5).

· Baldwin also has a cross-reference to the Merc 35-802885T (short canister). It is the Baldwin B360. It is higher priced (about $9) than the Baldwin 1428 that is compared here.

· One source on the web for Baldwin filters is http://www.adiesel.com/. If you can’t find Baldwin filters locally, adiesel.com may be an option.

The following information is provided by the respective manufacturer technical support:
Baldwin B1428
· 6 micron

· 150 psi working pressure

· 89.35% average efficiency

· 391.1 sq. in. of media

· Flow rates:

o 2 gpm @ 3 psid

o 5 gpm @ 5 psid

o 9 gpm @10 psid

o 11.5 gpm @ 15 psid

o 12 gpm @ 16 psid

Hastings LF279
· 8 micron

· 80 psi working pressure

· 90.58% average efficiency

· 476.27 sq. in. of media (note: I have asked Hastings about this discrepancy with my data; perhaps it is a typo on their part and should be 276?)

· Flow rates:

o 2 gpm @ 3 psid

o 5 gpm @ 5 psid

o 9 gpm @10 psid

o 11.5 gpm @ 15 psid

o 12 gpm @ 16 psid

Fram PH5 EG and TG
· micron rating = PH5 and TG5 are nominal 10 micron

· flow rating = PH5 & TG5 have a flow rate of 3 GPM

· efficiency rating = PH5 (96% Single Pass Efficiency) & TG5 (98% SPE)

· filter area = Engineering design specification not for publication

AC Delco 1218
· With regards to your inquiry about ACDelco PF1218 oil filter, we are unable to locate the technical information in our records. Please contact an ACDelco Retailer, Service Center or a GM Dealer in your area for information, as they may be in a position to assist you.

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Hydrocruiser

If you want the very best marine oil filtration system her ya go::

www.amsoil.com


Very easy to insall by spinning the dual system adapter to the existing oil filter aparatus and then you use 2 filters. The secondary filter not only pulls out minute particles but also water!!!
PRODUCT DESCRIPTION
The AMSOIL By-Pass Oil Filter provides the best possible filtration protection against wear, oil degradation, rust and corrosion. Working in conjunction with the engine’s full-flow oil filter, the AMSOIL By-Pass Filter operates by filtering oil on a "partial-flow" basis. It draws approximately ten percent of the oil at any one time and traps the extremely small, wear-causing contaminants and water that full-flow filters can’t remove. The AMSOIL By-Pass Filter typically filters all the oil in the system several times an hour, so the engine continuously receives analytically clean oil.

Reduces Wear
Approximately 60 percent of all engine wear is caused by dirt particles in the 5 to 20 micron range. These particles can get inside the precision clearances between engine components and cause severe damage. While full-flow oil filters generally stop contaminants no smaller than 25 to 40 microns, the AMSOIL By-Pass Filter effectively stops particles smaller than one micron in size, substantially reducing engine wear.

Prevents Oil Degradation, Rust and Corrosion
Water enters motor oil as a combustion by-product or as a condensate. Water contamination of the motor oil can cause extreme engine damage. Water causes metal surface rust and corrosion, which increases friction and wear and deteriorates the close-fitting tolerances between engine components. In addition, water reacts with other oil contaminants to form corrosive acids, which also damage metal components. The AMSOIL By-Pass Filter removes water, reducing the risk of oil degradation, engine rust and corrosion.

Extends Oil Drain Intervals
Because the AMSOIL By-Pass Oil Filter removes water and particles smaller than one micron, it significantly increases the time oil can safely be left in the engine. In fact , engines using AMSOIL Synthetic Motor Oil and an AMSOIL By-Pass Oil Filter routinely show much lower rates of engine wear - even when the oil is used for significantly longer drain intervals - than engines using conventional products and conventional oil drain intervals. That saves motorists time and money and helps protect the environment by creating substantially less used oil.

Dual Remote Filter System
The AMSOIL Dual Remote Oil Filtration System converts an engine’s full-flow oil filter system into a full-flow/by-pass oil filtration system by attaching an AMSOIL Full-Flow Oil Filter and AMSOIL Spin-On By-Pass Oil Filter onto a remote mount. The Dual Remote System provides superior filtration efficiency, increased oil capacity and improved oil filtration accessibility.

If you don't want to install this "rig" then the Mobil-1 or Amsoil filters are the best rated.