K&N filter care service kit aerosol.The K&N refill kit is designed to clean the K&N oiled cotton air filter when it's time for maintenance.Regeneration in 4 steps: spray generously K&N filter cleaner or K&N Power Kleen ™ spray on both sides of the filter and let it absorb for about 5/10 min. for the dirt to dissolve. Do not let the liquid dry on the air filter; wash the air filter with cold running water at low pressure from the clean part until the dirt has come out of the filter and all traces of the cleaner have disappeared. If necessary, repeat steps 1 and 2. gently shake off the remains of the water and allow to air dry. Absolutely do not use pressurized air to dry the filter. Do not use oil until the filter is completely dry. spray the K&N air filter oil evenly on the filter holding the cylinder at a distance of approx. 8 cm. Let the oil absorb for approx. 20 minutes. Spray oil on the parts that are not soaked until the filter is completely red. The kit contains: 1 bottle of detergent of 355 ml 1 x 204ml spray oil bottle