The one I just installed does not look like that. Easy to check before installation, is it is not a worry for me.
Premium Guard Ext Life - 99% at 25 microns, but micron rating is 42-60?
- Thread starter mitsuman47
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I’m really curious why the Boss performs so inefficiently.
I agree it’s an easy check. I check every filter before purchase no matter the brand.
Yes sir , compared to 25 years ago synthetic rigging and no stretch sheets (ropes) for non sailors , has transformed how a sailboat sails , less weight aloft etc .
dP inducing louvers.
Also used in the best at not filtering well, lol.
It can't retain captured debris very well, it lost much efficiency as the dP increased, as seen in Ascent's ISO test.
Related info showing how the Boss lost efficiency as it loaded during the Ascent's ISO efficiency testing.
Post in thread 'Filters Improving With Use' https://bobistheoilguy.com/forums/threads/filters-improving-with-use.389940/post-7082740
Case of PG XL’s from rock auto with shipping comes to $5.83 per filter. Really is a no brainer.
Sometimes I wonder if people buy the Boss for the name. There sure doesn't seem to be a rational technical reason for doing so.
This thread is supposed to be about the efficiency of the PG filter. But since you have decided to divert it to beat up on the Boss filter instead, let me explain my reasoning for picking the Boss in my latest oil change:
I am using the Boss filter with one of the best motor oils, do not have any plans for extended OCI, and have a clean well-cared-for engine with excellent air filtration. The Boss has been shown to have among the best flows and capacities in the test results we have available. So, it will not be anywhere close to being fully loaded when I replace it one year from now. As @dnewton3 has persuasively argued, the filter in this circumstance has very little to do. Since the media is very strong (untearable), is backed and there is no evidence of leakage around the media developing with use, the efficiency of the filter on the day I replace it will likely be the same as on the day I installed it.
So, at least in my case, your concerns are purely theoretical with no likely effect on my actual results.
I couldn’t care less about flow nor capacity. All filters are going to allow sufficient flow and any with a synthetic media will be better anyway. And as for capacity, even my ancient 1MZ-FE “sludge monster” has virtually nothing in the pleats when I’ve cut open filters. For me the inferior filtration efficiency of the Boss is enough to remove it from consideration.
Flow and capacity are brought up as determining factors when in reality those are two of the least concerns for most people. Filters are supposed to filter and that’s what I care about most.
Maybe I just don’t need to feel like The Boss.
Flow and capacity are brought up as determining factors when in reality those are two of the least concerns for most people. Filters are supposed to filter and that’s what I care about most.
Maybe I just don’t need to feel like The Boss.
Yes! One of the many PG XL clones available.
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Zee09
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"Beat up the Boss" ? ... it's called data and facts in a response to why certain filters aren't efficient. The PG "efficiency mystery" has already been solved here so maybe a Mod should just lock it now before it gets into a dead horse beating thread. The thread wasn't even started by you so why so concerned how it unfolds.
Is this perhaps why you don't like the facts about the Boss efficiency?
It doesn't have to be "fully loaded" to exhibit the low efficiency. The ISO testing showed that it as only 85% @ 20u when only 10-15% loaded.
Which will still be relatively low because it starts out low when new.
I don't have any "concerns" ... I look at data and facts. I'm just showing the test data. Everyone who sees the facts and info on any filter should then decided what filter they want to use. If they chose the Boss, then great if that's their decision for their vehicle.
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Probably deciding base on BR's "efficiency" tests. You know testing on YT over-rides all official SAE and ISO testing.
BTW - here's a tidbit about oil filters that show low ISO 4548-12 efficiency. If they show behavior of debris shedding in the test, that also means they don't really have to be very loaded to slough off debris in real use because it's dP across the media that causes the shedding of already captured debris.
Any oil filter will see variations in dP across it in use. For instance in cold starts with some engine RPM, the dP will be higher than after the oil gets to full operating temperature. Of if someone hammers the throttle and likes to see near redline at times, the dP will be elevated across the oil filter. So in cases like that short durations of increased dP can cause the filter to release debris into the engine which will make a few rounds through the oiling system before getting captured again. A filter that has a high ISO 4548-12 efficiency will not shed as much debris in cases like that. Just something else to be aware of.
Any oil filter will see variations in dP across it in use. For instance in cold starts with some engine RPM, the dP will be higher than after the oil gets to full operating temperature. Of if someone hammers the throttle and likes to see near redline at times, the dP will be elevated across the oil filter. So in cases like that short durations of increased dP can cause the filter to release debris into the engine which will make a few rounds through the oiling system before getting captured again. A filter that has a high ISO 4548-12 efficiency will not shed as much debris in cases like that. Just something else to be aware of.
Where was it solved?
Re-read the thread, the available info has been presented. Efficiency was given on PG's website and references ISO 4548-12. The PG extended life filters are not "in the same range" as the Boss as you claimed in post 58.
No, the mystery was not solved.
I hung on to this thread up until this point because I was looking for that solution, but nobody had the solution. We are still lost in the same mystery that I described in post # 30. As I did with M+H, I have written the CEO of PG to help solve the mystery, and I will let everyone here know what the response is when I receive it.
Until then I'm outahere.
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I paid $5.99 for a Bosch Premium, plus tax, for one shipped. I can’t find anything not to like about it. 99%@20 microns. I can’t use 12 fast enough, half would be thrown out.
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