Based on driving conditions, the filter would need cleaning anywhere between 12,000 and 20,000 km.
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As a sequel to this post, I ended up cleaning my K&N filter again, this time after 12,000km; procedure and stuff used to clean and oil the filter were the same as in my earlier post.
1. The filter was more fouled up at the top half of the filter towards the tapered edge
2. A lot of dirt was trapped – showed up in the number of washes/rinses during cleaning
MAF Sensor after 12,000km
The “clean” (outlet) side of the dirty filter
The dirty inlet side of the dirty filter – note more clogging towards the taper end
Dirty filter inlet side against light
Rinse water after rounds 4, 5, 6, 7 in that order (forgot to click pics of Rounds 1 to 3)
Clean water at end of round7
Oiling the filter after leaving it to naturally dry for over 24 hours – extra time since sun was playing hide and seek
Clean filter against light
Before vs After – at the same place against same light
Summing it up
- Based on driving conditions, the filter would need cleaning anywhere between 12,000 and 20,000kms.The first tell tale sign is a drop in pick up and an increase in fuel consumption
- Personally, I think I did a more thorough job this time than last time. The filter wicks showed so.
- The process of cleaning and oiling is quite a pain – takes close to 1.5 hours to clean, overnight to 24 hours to dry, and another about an hour to oil. But this task forces one to squat, and helps in getting one’s joints oiled.
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