Jetex filter cleaning

gezmeister

I need a derv!!
Apr 1, 2008
2,172
0
Norwich
My jetex is starting to look a bit grubby. Couple of questions:

Is it just a case of removing and washing in soapy water?
Do i need to re-oil too?
If so which oil can i use?
 

sambryant

RoadRunner meep meep
Mar 26, 2009
4,848
2
Bristol
Wash it with washing up liquid. Rinse it from the inside. Leave it to dry. When dry put it back on the car. Note do not oil the filter as it will kill the maf sensor.
 

gezmeister

I need a derv!!
Apr 1, 2008
2,172
0
Norwich
Wash it with washing up liquid. Rinse it from the inside. Leave it to dry. When dry put it back on the car. Note do not oil the filter as it will kill the maf sensor.

Not true, over oiling causes MAF's to fail. Jetex filters come pre oiled, hence why i need to know if they need to be re-oiled
 

sambryant

RoadRunner meep meep
Mar 26, 2009
4,848
2
Bristol
If you knew that then why ask the question! I have never oiled mine and had no problem. I was always told to stay away from k&n as they are oiled and will kill the maf. Every one on here says go for jetex as they are not oiled and won't kill the maf.
 

leon cupra r

Back in an LCR!
Nov 10, 2009
902
0
Barnsley
I also do not usually oil the filter, from what I've heard though, a very light coating of standard engine oil will usually suffice if you want to oil it.
 

gezmeister

I need a derv!!
Apr 1, 2008
2,172
0
Norwich
If you knew that then why ask the question! I have never oiled mine and had no problem. I was always told to stay away from k&n as they are oiled and will kill the maf. Every one on here says go for jetex as they are not oiled and won't kill the maf.

I asked because it came pre oiled, and was wondering if it needed oiling again, please read the post properly! The thing about k+n filters is a myth, its all about people over oiling when they refit, as most have no clue as to how much to put on.
 

chandlercuprar

Leon Cupra RRRRR
Jul 11, 2010
14
0
The general rule is foan/sponge filters require a small amount of a thin oil (pipercross for one supply it in a spray can with their kits) paper type filters such as AEM dont use oil at all, mesh filters like k&n say use oil but its when you over do it that causes probs
 

sambryant

RoadRunner meep meep
Mar 26, 2009
4,848
2
Bristol
I was running a jetex filter up until a month ago. The jetex when new was slightly geasey but nothing like k&n. The neuspeed filter was bought about 1 year ago and was second hand. I'm sure in the cleaning guild that came with my jetex it says nothing about oil.
 

rsmith

Robbie
Apr 28, 2004
2,797
1
Tipperary, Ireland
Jetex filter does need to be re-oiled, i only wash re-oil mine every year, in between i just take it off and get the dyson to it in combination with a small paint brush(an arts and craft brush, v small) to loosen the debry.

Go easy on the oil BTW.
 

gezmeister

I need a derv!!
Apr 1, 2008
2,172
0
Norwich
Jetex filter does need to be re-oiled, i only wash re-oil mine every year, in between i just take it off and get the dyson to it in combination with a small paint brush(an arts and craft brush, v small) to loosen the debry.

Go easy on the oil BTW.

Ok mate, cheers for the info. What would happen if i didn't re-oil it? Would i get small dust particles going through the filter into the engine?
 

rsmith

Robbie
Apr 28, 2004
2,797
1
Tipperary, Ireland
Yes but into your turbo, but to be honest i have never heard of this causing problems for anyone, use a small amount of oil as said, its just there to catch the smaller particals, you can sleep a bit easier at night doing it right too.
 
Last edited:
Aug 1, 2009
511
0
Hemel Hempstead

I asked the same re-oiling question a few weeks back and got no answer, but basically followed the same instructions in that link. However, I used a K&N recharge kit, which is constists of a spray cleaner (so no need to roll the filter in a tub) and fine oil spray, which is pretty much what comes in all the kits tbh. And according to the instructions, the oil is there to assisst in catching smaller particles, so probably worth putting it on, as much as we all want g/s, its probably more important to get good filtration first.

Light dusting of oil is all that is meant to be needed, and so far it doesnt seem to have affected my MAF yet - not sure if there would be codes or anything though - what would be symptons if you did get an oily MAF? But cheap and easy to do, even simpler for you open cone boys as I have a BMC, so just took about 3 more minutes to take off and apart... Cleaning kit lasts for a few cleans too, judging by the amount i have left (and I used a lot of cleaner and just enough oil).
 
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