Engine air filter cleaning

I adapted the BMC cotton air filter for the VWR air intake system 4 months before.
After ~8 thousands kilometers I decided to inspect and clean the air filter.

The filter is slightly soiled

Cleaned and oiled

This cotton filter must be carefully cleaned and oiled with the appropriate low viscosity oil. I used a special cleaning kit from K&N. 

Here you may see the cleaning instructions.

After the cleaning the filter has been returned into it's box and mounted back on car.

VWR air filter box

Odometer: 64,500 km.