OVERKILL
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I've posted this material in various other threads recently, but I thought it might make sense to just give it its own topic.
There are four main types of oil filter media:
- Cellulose
- Blend/hybrid
- Synthetic Microglass
- Synthetic Microfibre (variants)
Cellulose
Cellulose is your old school pulp media. It is what is used in the vast majority of filters on the market. It is extremely inexpensive to produce and is available in a wide range of efficiency ratings, the selection of which would depend on the flow volume required for a given surface area. High efficiency cellulose doesn't flow as well, so the more efficient the media, the more of it you need to maintain your flow. An example of a high efficiency cellulose filter would be the Purolator PureONE.
From Donaldson:
From Cummins Filtration (Fleetguard):
Cellulose provides very limited depth due to the large fibres, which tend to promote surface loading of large particles, which can then fall off and deposit in the bottom of the can. This is what that looks like:
There is risk that these particles may be washed through the engine during a bypass event, which is why cellulose filters aren't marketed for extended drain applications where significant loading may take place.
Blend/Hybrid
This media combines both cellulose and synthetic fibres as a "value" solution to increase holding capacity, efficiency and flow for a given surface area. Similar in construction to cellulose, but the blending of smaller synthetic fibres in with the cellulose improves flow and holding capacity. An example of a filter using this filter is the Mobil 1.
From Donaldson:
Because it functions similarly to cellulose, it also tends to experience face loading, which can result in particulate falling off and depositing in the bottom of the can. Some pictures (M1 EP):
There are four main types of oil filter media:
- Cellulose
- Blend/hybrid
- Synthetic Microglass
- Synthetic Microfibre (variants)
Cellulose
Cellulose is your old school pulp media. It is what is used in the vast majority of filters on the market. It is extremely inexpensive to produce and is available in a wide range of efficiency ratings, the selection of which would depend on the flow volume required for a given surface area. High efficiency cellulose doesn't flow as well, so the more efficient the media, the more of it you need to maintain your flow. An example of a high efficiency cellulose filter would be the Purolator PureONE.
From Donaldson:
From Cummins Filtration (Fleetguard):
Cellulose provides very limited depth due to the large fibres, which tend to promote surface loading of large particles, which can then fall off and deposit in the bottom of the can. This is what that looks like:
There is risk that these particles may be washed through the engine during a bypass event, which is why cellulose filters aren't marketed for extended drain applications where significant loading may take place.
Blend/Hybrid
This media combines both cellulose and synthetic fibres as a "value" solution to increase holding capacity, efficiency and flow for a given surface area. Similar in construction to cellulose, but the blending of smaller synthetic fibres in with the cellulose improves flow and holding capacity. An example of a filter using this filter is the Mobil 1.
From Donaldson:
Because it functions similarly to cellulose, it also tends to experience face loading, which can result in particulate falling off and depositing in the bottom of the can. Some pictures (M1 EP):
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