Fleetguard LF16011 - Cut open - New

This verifies the filter is safe to use on Toyotas or any vehicle that specs a ph3614 filter. I think the fleetguard webpage bypass spec is in the max open pressure range because applying 4 pounds gives me 26.6 psid in which the bypass looks fully opened.

I dont know the StrataPore micron rating but a quick search here says its 100% @ 30 microns and 99% @ 25 microns from a topic 10 years ago so not sure how much that has changed over the years.
I know many of you are running these without issue but it still bothers me that Donaldson lists a completely different filter cross for the 3614. Seems to me there is likely a reason for that.

At any rate I will continue to watch with interest.👀
 
I know many of you are running these without issue but it still bothers me that Donaldson lists a completely different filter cross for the 3614. Seems to me there is likely a reason for that.

At any rate I will continue to watch with interest.👀
Donaldson and Fleetguard have multiple tier offering of their filters. A basic crossreference is a starting point imo. You dont have to bound yourself to it. Same reason why some of us prefer to use a larger filter for obvious reasons.

The P551132 bypass opening force starts at 3 pounds and an opening diameter of 9/16 of an inch which estimates to about 12 PSID which is in range of what the web page spec of 11 PSID lower and 17 PSID max opening pressure. So yeah its fine and safe to subsitute a 3614 filter. And you get the best in the industry micron rating synteq media.
 
Later in a week or two I'll get around to buying some OEM Subaru oil filters at the dealership, mostly to put the 23 psi claim to rest mainly because I'm in the market for a high efficiency filter for the 2022 WRX and all these bypass pressure claims all over the internet are just outright confusing or a marketing tactic to vendor lock Subaru owners to OEM filters only. If you guys have suggestions on which OEM part number filters to get and cut open to measure bypass opening pressures feel free to drop a comment.

Great pictures! Now, if we could find a way to get the price of them down to closer to Fram Endurance & Royal Purple levels...
Yeah every major heavy duty retailer prices range from about 20 dollars give and take. You could try ebay but risk getting fakes or very old stock. I ordered and shipped from Fleetpride and they seem to have these sealed in a baggy plastic bag whereas the Donaldson is shrink wrapped.
 
Later in a week or two I'll get around to buying some OEM Subaru oil filters at the dealership, mostly to put the 23 psi claim to rest mainly because I'm in the market for a high efficiency filter for the 2022 WRX and all these bypass pressure claims all over the internet are just outright confusing or a marketing tactic to vendor lock Subaru owners to OEM filters only.
I think there are a few aftermarket filters that do have a specific Subaru application with the higher bypass valve setting. Will be interesting to see how the OEM Subaru filters test for bypass valve crack-open PSI.
 
I think there are a few aftermarket filters that do have a specific Subaru application with the higher bypass valve setting. Will be interesting to see how the OEM Subaru filters test for bypass valve crack-open PSI.
Mainly interested in the lower range opening pressures, once the valve starts opening even just by a little, the filter is pretty much out of the system. So far the Donaldson P551132 is close accurate to what its specs page claimed as I mentioned above it starts to open at 3 pounds of force which estimated to 12 PSI opening pressure. I have also measured the Toyota YZZN1 bypass as well but I will do future cut open thread for those later once I get the full set of various sizes from the dealership.
 
Mainly interested in the lower range opening pressures, once the valve starts opening even just by a little, the filter is pretty much out of the system.
I wouldn't say that, because even if the filter bypass is cracked open a bit, the vast majority of the flow is still going through the media.
 
Later in a week or two I'll get around to buying some OEM Subaru oil filters at the dealership, mostly to put the 23 psi claim to rest mainly because I'm in the market for a high efficiency filter for the 2022 WRX and all these bypass pressure claims all over the internet are just outright confusing or a marketing tactic to vendor lock Subaru owners to OEM filters only. If you guys have suggestions on which OEM part number filters to get and cut open to measure bypass opening pressures feel free to drop a comment.


Yeah every major heavy duty retailer prices range from about 20 dollars give and take. You could try ebay but risk getting fakes or very old stock. I ordered and shipped from Fleetpride and they seem to have these sealed in a baggy plastic bag whereas the Donaldson is shrink wrapped.
This is the filter for the 22 wrx that I have

20240503_114139.webp
 
This is a direct cross-reference to the Donaldson P551132 and indirect cross to the PH3614 which is spec'd for the Cummins B3.3 engine. One of the Fleetguard LF16011 arrived damaged so I decide to cut her open. Counted 53+1 pleats which includes the metal seam, probably the most packed synthetic media bought so far for such a small sized filter which I believe its their smallest Stratapore filter you can get that fits a 3/4-16 UNF thread. Endcap to endcap length is about 2.25" inches long, the whole outside filter canister measured 3.5 inches long. Unfortunately theres no micron rating other than a opaque efficiency rating of 100% at their website.

A Silicone ADBV is a nice addition compared to the Donaldson which has a black nitrile ADBV.

The bypass setting is a bit misleading on Fleetguard's website which says 28.6 PSI , the spring pressure feels slightly lighter than the Donaldson and Toyota, although those bypass face diameter is larger whereas the Fleetguard is smaller and similar to the STP XL one. The STP S3600XL has the most stiff spring pressure out of the rest. Kinda makes me say you can probably use it on a Toyota too, kinda odd its not listed as a compatible filter.

These aren't exactly cheap, probably the most expensive filter bought so far, they go about 20 dollars a piece, plus or minus a few dollars depending who you get it from. I'd probably go with the Donaldson since you get 2 for the price of 1 unless you need the silicone ADBV on the Fleetguard.

The only disappointing complaint I have about this filter is the center tube louvers are poorly formed on both samples purchased compared to the Donaldson. I expected better for a filter at this price range and big name in the trucking industry. Anyways Enjoy the pics.

The first picture in your series of pictures might help me to understand why I was unable to install the Donaldson filter on my Toyota 2.5 liter engine recently. And why the Fleetgaurd filter might fit. I wasn't able to get the Donaldson filter to engage the threads on the filter boss when I
attempted to install it. It appears that the threaded area of that filter is slightly recessed when compared to the Fleetgaurd filter. I had thought that I wasn't able to install the filter due to the O.D. of the filter being 8mm larger than a Toyota YZZN1 stock replacement filter or my usual Ultra XG4386. I might have to revisit the Fleetgaurd filter option. I am trying to " correct" ( lower) some slightly higher than normal wear
metals that I am seeing in my UOAs. Break in wasn't done properly by previous owner ( Avis rental car ).
 
The first picture in your series of pictures might help me to understand why I was unable to install the Donaldson filter on my Toyota 2.5 liter engine recently. And why the Fleetgaurd filter might fit. I wasn't able to get the Donaldson filter to engage the threads on the filter boss when I
attempted to install it. It appears that the threaded area of that filter is slightly recessed when compared to the Fleetgaurd filter. I had thought that I wasn't able to install the filter due to the O.D. of the filter being 8mm larger than a Toyota YZZN1 stock replacement filter or my usual Ultra XG4386. I might have to revisit the Fleetgaurd filter option. I am trying to " correct" ( lower) some slightly higher than normal wear
metals that I am seeing in my UOAs. Break in wasn't done properly by previous owner ( Avis rental car ).

If you can't fit the Donaldson you won't be able to fit this Fleetguard filter as well, they both have the same can seam O.D. & gasket O.D.
It doesn't matter how the base plate design is on either, as you discussed last time the issue with your engine is the surrounding casting clearance. As said before if any of the Toyota YZZD1 or D3 filter fits then these should fit. The 3/4"-16 thread boss depth won't matter if you can't seat the filter down against the block.
 
If you can't fit the Donaldson you won't be able to fit this Fleetguard filter as well, they both have the same can seam O.D. & gasket O.D.
It doesn't matter how the base plate design is on either, as you discussed last time the issue with your engine is the surrounding casting clearance. As said before if any of the Toyota YZZD1 or D3 filter fits then these should fit. The 3/4"-16 thread boss depth won't matter if you can't seat the filter down against the block.
I originally had a Toyota YZZN1 filter on the vehicle when it was purchased. I did an oil change using Amsoil Signature Series 0W-16 and an Amsoil EA15K09 filter. The Amsoil filter was smaller in length than the Toyota filter, so I was looking to get a larger filter than the Amsoil filter with the highest efficiency rating similar to the Amsoil. I have since been using a Fram XG4386, which is a larger ( in length) filter than the two previous filters. I am hoping that the Fram filter will help me bring down the slightly higher levels of aluminum that is showing up in the UOA. Car hadn't been broken in per the owners manual, so I am dealing with the wear metal issues.
Thank you for your response and time.
 
I am hoping that the Fram filter will help me bring down the slightly higher levels of aluminum that is showing up in the UOA.
The particles measured in the UOA are only around 5 microns and smaller in size, so no normal spin-on oil filter will remove them and change the level seen in the UOA.
 
I originally had a Toyota YZZN1 filter on the vehicle when it was purchased. I did an oil change using Amsoil Signature Series 0W-16 and an Amsoil EA15K09 filter. The Amsoil filter was smaller in length than the Toyota filter, so I was looking to get a larger filter than the Amsoil filter with the highest efficiency rating similar to the Amsoil. I have since been using a Fram XG4386, which is a larger ( in length) filter than the two previous filters. I am hoping that the Fram filter will help me bring down the slightly higher levels of aluminum that is showing up in the UOA. Car hadn't been broken in per the owners manual, so I am dealing with the wear metal issues.
Thank you for your response and time.

This sounds like something no oil filter is going to solve. If you think you have abnormal wear issues along with other symptoms affecting driveability that would be another topic for discussion.

Do you have some oil sample reports, vehicle type/engine and mileage to share concerning your reasoning on why you looking for a high efficiency filter? Without data to share we and others here cannot draw conclusion to your oil analysis concerns. There are lots of cars on the road driven like a beater out of the dealership lot when new so its my educated guess to say you might be overthinking over it. An engine break-in phase may take up to 40-50 thousand miles to show trending decline of break in wear metals.

A high efficiency oil filter may be a great and good mitigation against normalized wear in the long term in relation to equipment life, but its not going to stop abnormal wear coming from something else in the engine that would concern you.
 
This sounds like something no oil filter is going to solve. If you think you have abnormal wear issues along with other symptoms affecting driveability that would be another topic for discussion.
Best thing to do is cut the oil filter open and look for signs of abnormal metal debris. On a healthy engine that's broken in, there should be no signs of visible metallic debris.
 
Wholefully agreed, maybe he should buy an oil filter cutter too, which should help confirm with his engine wear concerns. I do C&P and post them here on all the cars I service and share them with my friends and clients whether they want to do an oil analysis program is entirely on them should they have concerns.
 
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