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Best air filter

jdelrizzle

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jdelrizzle Enthusiast

jdelrizzle

Posted
Posted

So I know ac delco air filters are good stuff, kinda pricey especially if I change my air filter every oil change, I know fram is garbage, k and n is no good for my truck, I'm leaning towards wix, what do guys think, I have 2011 gmc Sierra 4.8 v8 crew cab

DaveH71 Enthusiast

DaveH71

Posted
Posted

No need to change your air filter at every oil change. That's way overkill. A good test to see if it needs replaced is to hold it up to a light source, and if you can see light through it then its fine. Yes ac delco will be the best. Any aftermarket filter that advertises better flow is just letting more unfiltered air through. I think the scheduled maintenance on this is 25,000miles but im not positive on that. I would replace mine at the 25,000mile interval anyway.

Mikeb52r Enthusiast

Mikeb52r

Posted
Posted

I agree with Dave. Usually I change mine every year or so depending on milage. My 08 still has the factory filter in it at 22K miles and will be changed this spring. Really doesn't look all that dirty either.

tyhuck Senior Enthusiast

tyhuck

Posted
Posted

I thought at one time I read that a lot of AC Dleco filters (air, oil, etc) were made by Wix anyway. Or vice-versa.

amc31b Enthusiast

amc31b

Posted
Posted

 

Most AC Delco filters are made by Champion laboratories, the same people who make STP filters and mobil 1 oil filters. As far as air filters go, I am not too sure who makes AC delco but I have done alot of research and fram is actually OK, Fram's Tough Guard air filters are actually pretty good. Wix (also availble as napa gold) are great and the Purolator pure1 air filters are good too. Stay away from K&N, STP and the no name stuff. If it were me, I would use the ac delco or napa gold filters. I have heard of oiled element filters Like the purolator pure1, fram tough guard and K&N causing problems in GM trucks.
tyhuck Senior Enthusiast

tyhuck

Posted
Posted

As long as you dont over oil them and let them dry completely before installing them, you wont have any problems with an oiled filter. The problem comes when people put too much oil on them and dont let them dry completely. The excess oil gets sucked onto the MAF sensor coils and causes issues.

amc31b Enthusiast

amc31b

Posted
Posted

Yes but I have heard of that happening with the Fram tough guard and pure1 filters too. They get over oiled by the sloppy machine (which the companies penny pinches to not have adjusted often enough) at the factory, quality control never catches it, the filter makes it to your truck, you think it is normal and booop, you have problems.....

I know any product of any type can have quality control problems like that but I say it is just easier to not bother with the oiled filter in the first place. Buy a regular dry element filter like ac delco or wix, inspect it before you install it and call it done.

UOA's are the best way to see if your air filter is doing a good job and the ac delco and wix filters have done well in the past. I havent seen any UOA's that show any of the oiled element filters getting any lower silicon amounts than the regular dry panel type filters.

In the end, to each his own, I dont do the internet bickering thing. Just something to think about.

Mossyoakglock Senior Enthusiast

Mossyoakglock

Posted
Posted

I have the High Capacity air filter option (K47) and need to replace my filter when I change out my fluids soon. Do I need to use the heavy duty option filter instead of the regular duty filter? Wix makes both a light duty and heavy duty (for high capacity option).

 

My driving is mainly city and highway so I rarely drive on dusty roads. Price is not a concern since they are within $1 of each so is there any advantage to using the light duty filter instead of the Heavy Duty filter? I thought I read somewhere that they both flow about the same anyways but please correct me if I'm wrong.

 

Also, what all does the K47 option consist of? Is it just a filter or is the airbox different in some way. My dad's '07 Avalanche does not have the K47 option and I see no noticable difference between the two.

DaveH71 Enthusiast

DaveH71

Posted
Posted

No diffrence in the air box with the High capacity option, its just a paper filter that will hold more dirt before needing to be replaced. Like mike said it just has taller pleats. If there is only a 1$ diffrence i would just get the high capacity anyway.

amc31b Enthusiast

amc31b

Posted
Posted

I have wondered which filter to get myself. I am planning on buying both the heavy duty and normal filters, seeing which one fits better and makes a better seal and then returning the other one to get my money back.

RockySierra Enthusiast

RockySierra

Posted
Posted

There are some on here who think CAI are a bunch of hog wash but there are others on here who swear by them. Just something to consider. That being said, you will not notice any difference between the drop in filters. None of them will improve performance like a CAI might and they will all do a decent job at filtering. I'd just grab a regular AC/Delco filter, drop it in there, and replace it annually and forget about it.

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