K&N Air Filter Cleaning Provides the Biggest Returns for My Maintenance Efforts

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K&N Recharger Kit and My Jeep CJ7
K&N Recharger Kit and My Jeep CJ7
Without question, one of my oldest and most treasured possessions is my 1985 Jeep CJ7 which has 251,867 miles on the odometer. Other than the 500 miles that were put there early on by my wife when she was looking to keep up on her manual transmission skills, I put every klick on that bad boy. The places my CJ and I have been, and the stories we could spin, would sustain many seasons of a Jeep Reality Show.

I take it pretty easy on the CJ these days; it deserves that, being that in all our years together it has never once left me stranded anywhere. I've always been able to hose clamp, duct tape and bubblegum things together enough to roll home. People smirk at the "it's a Jeep thing" mantra, but I'm firmly convinced that my Jeep has an automotive soul that appreciates my regular maintenance as much as I respect it steadfastness.

K&N Performance Air Filter for Jeep CJ7 Cleaned and Ready to be Oiled
K&N Performance Air Filter for Jeep CJ7 Cleaned and Ready to be Oiled
Keeping the air filter clean on the CJ is a must, especially if you tend to run it off-road looking for ideal mountain biking locals. A few years ago I put a K&N E-1080 air filter in my Jeep and I could immediately feel it breathing better. When you spend that many miles in the same car you can even feel when a tire loses a few PSI. I like keeping my Jeep happy and cleaning my air filter has become perhaps my favorite maintenance procedure, simply because of the huge return I get for such a simple task. With a K&N Recharger® Kit 99-5050 or 99-5000, the most time consuming part of cleaning the filter is also the most effortless. I'll get back to that in a minute.

Two wing nuts securing the air filter housing cover is all that separates me from getting to the filter element. In less than a minute I'm holding the air filter and applying K&N PowerKleen® industrial strength degreaser and air filter cleaner. I let the cleaner soak for about 10 minutes on the air filter so that it can thoroughly loosen the dirt and road grime and then I gently rinse it with a hose until the water runs clean. When all of the dirt has been washed out, I know I've cleaned it correctly. If I still see dark patches of red or more dirt after rinsing, I simply spray on more PowerKleen and repeat the procedure until the filter media is clean.
K&N Jeep CJ7 Replacement Air Filter
K&N Jeep CJ7 Replacement Air Filter


Next, it is time to let the filter element completely dry before spraying on the air filter oil. On average that only takes 1-2 hours depending on how warm it is outside. Once the filter is thoroughly dry, I simply spray on the air filter oil slowly and evenly along the peak of each filter pleat, and then let it sit for 10 to 20 minutes or so. The oil's distinctive red color makes it easy to tell if filter is uniformly covered, if there are still spotty areas after allowing the oil to wick, I just spray on a little more oil, and viola, I'm ready to roll. Most K&N air filters can perform up to 50,000 miles between cleaning depending on driving conditions, some more some less. With the way I pamper my jeep, this could be a very long time.

See all K&N air filters for 1972 through 1987 Jeep CJ7 models at the Jeep CJ7 Air Filters page on KNFilters.com. Find K&N products for just about any vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

Check out pictures of what a dirty air filter looks like, air filter cleaning videos, and other K&N air filter cleaning products available on the K&N website.



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K&N Engineering in Riverside California is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969 and has been perfecting the technology ever since. K&N is a world class filtration company selling air filters, oil filters, and intakes in over 30 countries. K&N sells over 5,000 products designed for cars, trucks, motorcycles, engines, and industrial applications. From their Million Mile Warranty to their Consumer Protection Pledge, K&N stands behind their products and their consumers 100%. The distinctive K&N logo represents performance from one of the original performance companies. For more information, visit knfilters.com.

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