A) The typical DRY high-performance drop in air filter is able to trap slightly more contaminates (99%) due to the smaller micron size of the cotton gauze material used, but this also restricts the overall FLOW rate of the filter. The cfm (cubic feet of air per minute) is less than oiled filters of the same size.
B) The typical OILED high-performance drop in air filter is able trap slightly less contaminates (98%) due to a larger micron size size of the cotton gauze material used, and this improves the overall FLOW rate of the filter. The cfm is more than the dry filter of the same size.
Four other important notes:
1) The oiled filters can afford to have a slightly larger micron size, because the oil on the surface of the cotton gauze material acts as 'sticky trap' for a lot of the dust. It will not allow it to pass through the filter element. So overall it's the better choice all things considered.
2) Oiled filters can also add more layers of cotton gauze filter material without restricting the flow rate like a dry cotton gauze filter would.
3) Any one of the two filters above, will trounce the performance of the paper OE air filter that comes from the factory. (while retaining almost the same filtration percentage)
4) Oiled filters can be washed and re-oiled, which can save you money. Not every dry air filter is able to be reused.
Hi - these are honestly of no use in this region. K&N provides oil based filter system with lifetime guarantee. However, these oil based filters don't suit the desert climate of the middle east, specially where there is so much sand and dust flying....coz that simply sticks to the oil in the air filter and chokes it. I have used these before.
My recommendation....look for any racing filter but make sure that they are 'dry' filters and not 'oil' based air filters.
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very well said!
hi...
My question is... Whether your dry filter repel these external components?
It will be there till you replace the filter, even you cant clean it.
Hi..
A) The typical DRY high-performance drop in air filter is able to trap slightly more contaminates (99%) due to the smaller micron size of the cotton gauze material used, but this also restricts the overall FLOW rate of the filter. The cfm (cubic feet of air per minute) is less than oiled filters of the same size.
B) The typical OILED high-performance drop in air filter is able trap slightly less contaminates (98%) due to a larger micron size size of the cotton gauze material used, and this improves the overall FLOW rate of the filter. The cfm is more than the dry filter of the same size.
Four other important notes:
1) The oiled filters can afford to have a slightly larger micron size, because the oil on the surface of the cotton gauze material acts as 'sticky trap' for a lot of the dust. It will not allow it to pass through the filter element. So overall it's the better choice all things considered.
2) Oiled filters can also add more layers of cotton gauze filter material without restricting the flow rate like a dry cotton gauze filter would.
3) Any one of the two filters above, will trounce the performance of the paper OE air filter that comes from the factory. (while retaining almost the same filtration percentage)
4) Oiled filters can be washed and re-oiled, which can save you money. Not every dry air filter is able to be reused.
__________________
Hi - these are honestly of no use in this region. K&N provides oil based filter system with lifetime guarantee. However, these oil based filters don't suit the desert climate of the middle east, specially where there is so much sand and dust flying....coz that simply sticks to the oil in the air filter and chokes it. I have used these before.
My recommendation....look for any racing filter but make sure that they are 'dry' filters and not 'oil' based air filters.
thanks!