again bumping an old topic
regarding oiled vs dry filters
as far as I know: only dry filters are
1) OEM-style paper filters,
2) AFE has 3 types of universal cone filters of which only 1 is non-oiled: the WHITE/GREY PROdryS (instead of the blue or yellow colored ones),
3) AEM dry flow,
4) Apexi powerflow (which are really great and not that expensive on nengun)
5) Amsoil
http://www.amsoil.com/shop/by-produ...ersal-air-induction-filters/?code=EAAU3050-EA,
6) Pipercross has NON oiled PANEL filters for the normal s60 and V70
7) HKS super filter Elements are available in a dry 3-layer, triple density or wet 2-layer, dual density construction.
The dry 3-layer type is standard in SMF Reloaded Intake kits, and is designed for superior filtration while still providing excellent airflow.
The wet 2-layer type is included in Racing Suction kits and is focused on maximizing airflow for performance, yet still keeping harmful particles from the engine.
If your vehicle is in a high dust area, HKS recommends using dry 3-layer elements.
The pipercross px1659 for the R's is an oiled one (I believe all black foam filters are to be oiled)
Simota promotes itself as dry filter, but there website says (when you search for maintenance) you should clean then every 5000mile and oil them.
A belgian shop that sold simota said they had problems with them and had bad filtering.
When a customer told them about the oiling part and they contacted simota, only at that time simota told them their filters aren't that great at filtering when not oiled)
Now, everytime when the discussion about oiled vs non oiled starts, people start saying that you only get problems when you OVER-OIL you filter or put it back when not dry.
Sure, you have to do it right, not use too much oil and surely wait till its dry before using.
BUT!!!!!!!!!
I've to look where I read it, but it was an official K&N statement: Very small dust particles can pull the oil out of the filter element.
So even when you buy a new filter or have it oiled correctly, you still risk "oiling" your MAF.
Again: eventhough on their site they keep claiming it is IMPOSSIBLE to get oil sucked out of the filter, even when over-oiled, I read this statement somewhere on a official kn website or public "press" release
I aint claiming this is what causes maf to fail, and using a maf cleaner now and then never hurts, but still.... I prefer dry filters
cheers