K and N

[dieseluser07]

Im about to re-oil a panel filter.

Only thing is the instructions are vague and just say spray it but then goes on to say 'touch up any light areas on either side'

However every single video i can find only shows them oiling the dirty side? Do i oil both sides or just the dirty side

[227bhp]

It's like cloth, it doesn't matter which side you apply it to. If you splashed red wine on your shirt would you not expect it to appear on the inside too?

[dieseluser07]

227bhp said:

It's like cloth, it doesn't matter which side you apply it to. If you splashed red wine on your shirt would you not expect it to appear on the inside too?

My thinking was oiling it both sides essentially gives it 2 barriers to stop particles getting through.

[dieseluser07]

Aquilea said:

227bhp said:

It's like cloth, it doesn't matter which side you apply it to. If you splashed red wine on your shirt would you not expect it to appear on the inside too?

This.

One side should be enough. The biggest risk in using a K&N is over-oiling it to the point droplets come off and get caught by the MAF sensor.

Just checked the k and n website about over oiling and they say this is practically impossible and has never happened in practice.

[227bhp]

dieseluser07 said:

227bhp said:

It's like cloth, it doesn't matter which side you apply it to. If you splashed red wine on your shirt would you not expect it to appear on the inside too?

My thinking was oiling it both sides essentially gives it 2 barriers to stop particles getting through.

Get that white shirt out and splash some K&N raspberry juice on and see what happens.

[Haltamer]

When it comes out of the packaging, it's doused in the oil - The side won't matter, just don't go overboard (I.e. not dripping in oil) as others have said as it can gunk the MAF.

[dieseluser07]

Haltamer said:

When it comes out of the packaging, it's doused in the oil - The side won't matter, just don't go overboard (I.e. not dripping in oil) as others have said as it can gunk the MAF.

Aye fair enough. Im cleaning it its not a new filter.

[paintman]

If they were that good they would fitted as standard equipment by vehicle manufacturers.

https://nicoclub.com/archives/kn-vs-oem-filter.htm...

[JonChalk]

paintman said:

If they were that good they would fitted as standard equipment by vehicle manufacturers.

https://nicoclub.com/archives/kn-vs-oem-filter.htm...

I would counter that with......

https://www.youtube.com/watch?v=GS69owXpGdY

[Tony1963]

If K&N and all the others could produce results from independent lab tests that showed that their filters produced higher air flow when new, higher air flow when maybe 10k miles old, AND that they filter AT LEAST as well as the OEM filter, they’d be shouting about it from the rooftops.

They don’t.

One guess at why they don’t.

[thetrickcyclist]

Horses for courses: I wouldn't bother using one for a standard vehicle however once tuning starts....proviso they would have to be robust enough for the application...I have twin 40s with them no problems..