the amsoil display advertisement video shows that the by pass filter can crystal clear oil which has had 5 micron or greater particles poured into it. It does this almost instantly.


Not clear if diesel soot if mostly sub micron or if the problem that the ratio to soot being produced vs the single pass ability to crystal clear the oil is weak.

I think I saw a grants paper toilet roll style video that did a pretty good job of cleaning the oil.

 

That FS2500 is rated 98% at 1 micron I believe... Soot gets much smaller than 1 micron I've read...


Between 6 and 30 nm
Soot forms during incomplete combustion from precursor molecules such as acetylene. It consists of agglomerated nanoparticles with diameters between 6 and 30 nm.
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Wikipedia
https://en.wikipedia.org/wiki/Soot

Soot - Wikipedia

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See all

Soot - Wikipedia

https://en.wikipedia.org/wiki/Soot

Soot particles have diameters between 6 and 30 nm and can be mixed with metal oxides and minerals and coated with sulfuric acid1. Soot is a type of particle pollution known as PM 2.5, which is particulate matter 2.5 micrometers in diameter or smaller2. The size of soot particles varies from 94 to 1000 Å and soot agglomerates have no definite size and shape3. Soot particles in lubricating oil have a mass weighted median diameter of 0.12 to 0.27 μm and a geometrical standard deviation from 2.4 to 4.0, dependent on the type of engine4. Soot contains PAHs, which are known mutagens and are classified as a "known human carcinogen" by the International Agency for Research on Cancer (IARC)5.

Not sure what all that means... but it sure as hell sounds **** ing way smaller than 1 micron. I'm sure if one were to delete the engine, take the EGR out of the equation which would take the majority of the soot out of the oil, the oil would look cleaner... But soot under a micron is really not causing the wear and tear like the bigger wear metal particles are... maybe someone smarter than myself can quote the average clearance size in the 6.7 Powerstroke engine and I bet a bypass filter will catch particles smaller than that.

 

No need for that. The stock filter micron rating should easily cover any clearance sizes in the engine and the super-filtered oil is just dumped back into the crankcase, it doesn't see the clearances anyway. It's overkill as you stated earlier and it serves the purpose desired by those that install them.

 

In 40 years of changing oil in various size engines in my vehicles I have yet to have issues with the brand of oil I use. I believe as long as you are changing the oil and oil filter at the prescribed maintenance for the vehicle there is no need for fancy gidgets and gadjets that are sold at extravagant costs including oils such as Amsoil.

I'm just glad that engine oil has gotten to the point that 3,000 mile oil changes are a thing of the past. Heck, now I usually go a year between oil changes (or 10,000 miles) since I use Mobil 1 Synthetic and Mobil 1 oil filters. Except for my F250 which I change at 7,500 miles.

oil change intervals

 

there’s no general one size fits all rule….some folks are metro drivers where they have to stop and idle every city block and only run short trips except for the few times of the year they do some towing , hauling, etc. other fold can dive all day at the speed limit, rarely stoping and idling.


the last time I checked, there were 500 6.7 engine blocks on back order at ford dealership repair shops for bearings and other failures. Driving til the oil monitor light says to change your oil with oem stock supplies did not work well for them.

 

I agree there's no one size fits all rule.

So how's a bypass filtration system going to extend engine life on your driving scenario? And how would it have prevented those 500 6.7 failures that are waiting for replacements?

 

Just to be devils advocate, that is making the assumption the 500 engine failures were due to people running the OLM to zero. We don't know how many of those were some other issue, such as running it well beyond the OLM, oil contamination with something else, dumping in crisco instead of CK-4, etc, etc.

 

We'll never know the facts behind the failures of those engines, but there are guys who go by the OEM OCIs and are still driving. I know I'm not a great example as I just daily drive my truck with no heavy use but I'm still going. I know of another truck, a friend of mine, a 16, that's used commercially and he lets the truck tell him when to change --- he's got 126k miles and still going. This may be manufacturing defects and not at all to do with OCI's.

 

Since we were talking about soot particles and their size, in my search for more info, I came across this... interesting.

https://unece.org/DAM/trans/doc/2011...PMP-26-08e.pdf

Nanosize Metal Oxide Particles emitted by Diesel- and Petrol-Engines

EU-PMP, ISPRA Dec.6.2011

Summing it up:

"Conclusions

-- Internal combustion engines emit metal oxide particles from engine wear and lubrication oil

-- metal oxides are probably more toxic than EC (soot)

-- PM can be 0.1-1 mg/km -> PN >108 #/cc -> 1014 #/kWh
-- Size around 20 nm, insoluble and toxic
-- health concern is justified Measures:
-- deploy efficient Particle Filter Systems on all ICE
-- reduce the metal content of the lubrication oil
-- extend PN-measurement to particle sizes < 23 nm

 

yes…especially since a lot of the oil goes into the intake via ccv system…I’d rather have highly filter 2 micron oil going into my intake than 20 micron filtered oil.

 

This article is talking points supporting DPF filtering the exhaust to improve health concerns for both gas and diesel engines. Doesn't have anything to do with oil filtration and how it affects engine longevity. Also this publication has european indicators all over it which loses credibility IMO.

 

Posted for conversation only really... Didn't look any further into it... But maybe it's factual because without an oil catch can or a CCV delete, motor oil is getting burned in the combustion chamber from the closed CCV system. Anyways, not really interested in this any further.

 

I have a toilet paper bypass filter. Like all bypass systems the oil still does turn black but is clean of any particles larger than 1 micron. Filter replacements also cost around $1. I haven't really been able to extend OCI though because of fuel dilution (thanks, EPA!).

 

Great point Jolly...

Agreed! Those **** ers!

 

So you know for a fact that 6.7 engine blocks were destroyed because people waited until the oil life monitor told them to change the oil?
If that was the case then it wouldn't have mattered when they changed the oil.