Can you oil this filter

The Air filter is Dry Type and made of Synthetic Cotton. No need to oil. It is washable and reusable. You can just wash the filter every 5000 miles with soap and water. You may use the cleaning kit for Dry Filter from AEM if you want. Let the filter air dry completely before put it back to the intake system.

Should this filter be oiled?

The Air filter is Dry Type and made of Synthetic Cotton. No need to oil. It is washable and reusable. You can just wash the filter every 5000 miles with soap and water. You may use the cleaning kit for Dry Filter from AEM if you want. Let the filter air dry completely before put it back to the intake system.

Will this fit a 2005 Chevy Impala

This air filter is universal type. It is not specificly designed for certain vehicles.

what is the cotton's pore diameter( largest dirt size that passes through the cotton)

They don't give that info. I do not frive in heavy dust aeras like Las Vegas that a real fine dirt would be blowing around the desert. But it works o my old ford diesel as a double filter

Brand	Rtunes Racing
OEM Part Number	AFL4B
Shape	Conical
Manufacturer	Rtunes Racing
Automotive Fit Type	Universal Fit
UPC	615213973265
Item Weight	1.43 pounds
Package Dimensions	9.92 x 6.5 x 6.34 inches
Item model number	AFL4B
Is Discontinued By Manufacturer	No
Manufacturer Part Number	AFL4B

BLUE 4" 102 mm Inlet Truck Air Cone Replacement Performance Washable Clamp-On Dry Air Filter (8" Tall)

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