K&N filter 3.0TD Patrol

G'day mate,
Yes the Donaldson pre-filter that goes on top of the Safari snorkel. I have one, but rarely use it. I take it with me when I go on an extended trip when I know there will be lots of dust. However, I only fit it once I am in that situation....otherwise it seems to reduce the air intake at highway speeds.
I also have a Uni-filter which I no longer use. The main reason is that I became worried about what would occur if my maintaenance schedule was not quite up to scratch and it dried out a bit too much. Foam has a habit of breaking down after a period, especially if subjected to heat, and I did not fancy seeing what would happen if small bits of foam were sucked in through my turbo into the inlet chamber.....
Cheers
Roachie

Hi Leroy,
Do you have the part number for the Nissan wet filter?

Thanks

Scott

I could probably find the part no. but generally they are the filters they keep in stock now. Sometimes you come across dealers that don't know there are 2 filters and hand you a dry filter! If you come across one of those let me know and I find one of my old invoices with the part no.

Leroy

“MAF get's sandblasted”
That’s a little bit of an overstatement

“Secondly the MAF sensor gets a coating of oil on”
Only if you don’t know how to oil them properly, Simply cleaning the MAF with some Throttle body cleaner every 15-20,000k’s will eliminated the risk anyway

I have been running a K&N for 50,000k with no problems and my MAF is like 4-inch from the filter, and never any sign of Oil or dust in the intake tube.

96.8- 99.3= 2.5% difference between the Top AC Delco and the K&N in overall ability to capture dirt. Oh baby that’s huge.
And it passed 7.0grms of dirt or 2/10ths of F***kall out of 221grs and blocked up in 20minutes, if you are driving in conditions that block a filter in 20minutes you probably shouldn’t be driving anyway.
Point to note also is the K&N gets a lot of it’s filtering ability from the oil if you pull in a lot of dirt that soaks up the oil and reduces it’s filtering ability.

If you are going to be driving in extremely dusty conditions all the time a K&N is not for you but if you are going to be driving in those sorts of conditions then you would run a Pre-cleaner, swap to a paper element or take the 5 min to tap out the lose cit from the K&N and apply some more oil, My feeling is for most 4WD applications nothing wrong with a K&N.

No over statement. Straight from the dealer who services my vehicle.
Also generally people put more oil on than not on foam filter...just in case.

Leroy

Yes they probably do but it’s a case of following instructions. K&N are not foam; I find they are also easy to tell when over oiled thanks to the coloured oil you use. Have never used a UNI-Filter

Ok whatever they dealer thinks, I will be staying with my K&N and have no concerns with it.

I gather this was the filter test you used to quote from? Interesting read.

filter comparison

Leroy