K & N Filters

What motor/vehicle do you have?

Sorry. Series 80 Diesel

Cheers Howard

To pre-emp what I think Phil G was alluding too. Over oiling can be a problem in the later type of engines where you have some form of sensor for airflow or manifold pressure , in a low tech system consider it a bit of upper cylinder lubricant. Can't hurt anything.

Cheers Dave L.

I think the K&N filter will do more harm . They are a filter designed for performance and work because they are less restrictive to the airflow.
Airflow and filtration are directly related.

After 'experimenting' with one vehicle from virtually new by fitting an oiled foam filter I always found when removing the inlet trunking between the air cleaner and the engine that every time there was a good coating of very fine dust inside.
By 100k the engine drank up to several litres of oil between 5k changes.
Every vehicle since has had paper filters and consequently no dust in the inlet tract.
Do a search there are a couple of websites explaining the downside of oiled foam filters complete with scientific testing and results.

That's why they call 'em Rock-Catchers :-)

I had the same experience on my bike as mentioned above.

Tap it out and>
Spray it with the K&N Cleaner and let it sit for a minute or 2

Wash it out with the Hose running the water throe from the clean side

Give it a bit of a shake out and Let in Dry naturally (May take a hour or so)

Re oil buy Spraying the K&N oil along the pleats in one movement, repeat till you have covered the hole surface of the filter (If oiled correctly the filter should turn a Red colour) Let it sit for 10 minutes with the side you oiled facing up so as to allow the oil to soak in.

Come back check the filter surface is red on both sides ( If not you may what to lightly touch up spay just that aria.

Make sure there isn’t excessive oil dripping off the filter (The Wire Gauze shouldn’t have oil dripping off it, If need be give it a light wipe with a clean towel and you are done.

The K&N Filters Just fine, the cache is it holds less dirt before it’s filtering ability is compromised; Fact is more dirt probably enters your engine when it’s serviced from dirty oil handling equipment and dirt on the engine than throe the K&N.