DO NOT under any circumstances use compressed air or water with high pressure to clean K&N filters. This WILL wreck the cotton weave of these types of filters.
Don't be a tight ass and get yourself a cleaning kit which includes the oil.
You are not just talking about wrecking the filter.... you are also giving the chance for the filter to not do its job and let crap enter into your engine.
If you have used up all the detergent and still have oil left...... you MAY try a dishwashing liquid quite diluted in a spray bottle. Again... I don't recommend it due to there possibly being some "caustic" nature to it. Do this at your own discretion. Neither I or Ozhonda take responsibility if your filter is rooted.
Best method to clean your filter...... use the detergent in a spray bottle and spray the "outside" of the filter well. Let sit for a good 5 to 10 mins. Then with a tap or hose with water vitually dribbling out wash out the filter from the inside out. This is important so as to dislodge crap and get it out. If you where to rinse from the outside in your are just forcing crap into the cotton weave. Again.... no high water pressure.
Let it dry by itself...... no hot air, pressurised air etc. Then oil .. with the emphasis on light coating..... don't soak the crap out of the cotton weave with oil.
far out.. just buy the K&N kit for ~$20.. it will last you about 10 filter cleans !!!
not only does the kit come with a cleaning agent / de-greaser, but it comes with a tack-oil which traps the fine dirt that could penetrate the filter otherwise.
the tack-oil is dyed red so that you can see how evenly you re-apply the oil to the clean (grey) filter.
thanks for the advise peeps.......bought the K&N filter kit at autobarns, cost $25....i thought they'll cost alot :P. The kit did a great job, highly recommended.
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