Oiled or dry air filter

[Bartly]

Just wondering what people's thoughts are on air filter types for the 5.0. I've had a couple Dodge trucks with the Cummins turbo diesel in them. Word over in the Cummins world is if you have an engine problem, Dodge will void your engine warranty if they find out you are using a KN&N oiled filter. The claim is it lets more particulates through the filter and can cause engine damage vs. a paper filter. I'm new to the sports car world, is there much discussion about this over here? Do people avoid oiled filters and go with paper ones like they do with the Cummins engines?

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[Terminator2]

Just wondering what people's thoughts are on air filter types for the 5.0. I've had a couple Dodge trucks with the Cummins turbo diesel in them. Word over in the Cummins world is if you have an engine problem, Dodge will void your engine warranty if they find out you are using a KN&N oiled filter. The claim is it lets more particulates through the filter and can cause engine damage vs. a paper filter. I'm new to the sports car world, is there much discussion about this over here? Do people avoid oiled filters and go with paper ones like they do with the Cummins engines?

I can't see light easily through the S&B oiled filter on my Pmas intake so it's likely filtering pretty well. I know K&N filters have a lot of small holes in them you can see light come through them in a lot of spots in my experience.

 

[Quackfoo]

I picked up an aversion to oiled air filters years ago because on some cars the oil would foul the MAF sensors on some cars. (think i got that right lol)

 

[AmericanLegend]

I picked up an aversion to oiled air filters years ago because on some cars the oil would foul the MAF sensors on some cars. (think i got that right lol)

Yeap. Very well documented issue. I'd personally stay away from oiled filters.

 

[Bartly]

Thanks for the replies. I pulled the one out of my truck years ago after hearing about the possible denial of engine warranty.

Reason I'm asking about the 5.0 using them is I read in the FI section that Whipple uses an oiled filter on my heir supercharger kits. Just wanted to hear what others thoughts on this type of filter was on our Mustangs.

 

[ghostnote]

The maf fouling is a non-issue. When the time comes to oil the filter, just run it for a week and then degrease your MAF sensor with some $10 MAF sensor cleaner spray (which is mostly xylene or dimethylbenzene). 5 minutes to unscrew the MAF, clean it, and replace.

 

[Terminator2]

I picked up an aversion to oiled air filters years ago because on some cars the oil would foul the MAF sensors on some cars. (think i got that right lol)

It can happen with an over oiled filter but it's not likely with a properly oiled filter. If it bothers you you could clean the MAF with MAF cleaner after every time you clean and reoil the filter which isn't that often.

 

[tomnelsonii]

I am also curious about this topic. I am looking forward to hearing more input, advice, and experiences with the various filters. I was going to install a K&N drop in filter and then got cold feet and decided not to.

 

[Terminator2]

I am also curious about this topic. I am looking forward to hearing more input, advice, and experiences with the various filters. I was going to install a K&N drop in filter and then got cold feet and decided not to.

Don't bother on the drop in filters they flow less than the stock filter. Svt performance did a dyno test on both a NA and SC coyote in a climate controlled dyno and the K&N drop in lost power every time about 5-6whp if I remember correctly. If you want more power get a Pmas intake!!!

 

[Vinny@JLTPerformance]

In our testing on a Intake/tuned coyote, the dry filters are worth a consistent 1% (3-4whp on a 400whp car) over the oiled when they are brand new out of the box.

Downside of the dry is you can't really "clean" them, you can blow them out but really they need replaced about every 15-20k miles.

We tested on a employees 2014 Auto GT.

 

[Bartly]

What about them letting dirt into your cylinders? That was kind of the reason I started this thread. Curious if people with sports cars and Ford V8s are as concerned as the truck guys with Cummins engines?

 

[Terminator2]

What about them letting dirt into your cylinders? That was kind of the reason I started this thread. Curious if people with sports cars and Ford V8s are as concerned as the truck guys with Cummins engines?

Certain oiled filters will pass more fine dust than others from what I've seen K&N are the worst but still at least 91% efficient at trapping fine dust. Some other oiled filters are 98-99% efficient. So I'm not overly worried about most of them passing dirt other than K&N and probably the cheap spectre filters.

 

[VTECSAUCE]

Its better than no filter. I don't think microscopic dust particles are going to blow your engine. If you live in an area with known higher air particulates then perhaps you should worry. I am not worried about my AFE filter letting much past that could hurt the otherwise stock engine. Maybe at 200,000 miles it'll see some wear but I doubt I have the car at that point.

 

[5LITER]

Ive seen many failed turbos due to oiled filters(oil mixed with dirt acts like sand paper on the comp wheel) . If you go spend the money on a catch can and buy this, you arent doing yourself any favors.

 

[Terminator2]

Ive seen many failed turbos due to oiled filters(oil mixed with dirt acts like sand paper on the comp wheel) . If you go spend the money on a catch can and buy this, you arent doing yourself any favors.

I've never seen this except over oiled K&N filters (some of them damaged from rubbing on things) and even then it's rare. 100K miles on my 08 Turbo Cobalt and 96000 of those miles it had a Hahn cool ram intake with a K&N filter. Original motor and turbo zero issues.

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