sledmaster

I have used oiled air filters for years and i noticed that if you clean the mass air sensor about every 60 days the throttle response is much better. Also if you do not have a PCV catch can you may need to remove the throttle body and clean the oil out of the intake manifold at least every 6 months to a year. I just cleaned mine and was surprised at how much oil was in the intake.

petermj

This is like K&N type of filter? Is this when you clean the filter and apply the oil yourself? Maybe you use too much oil, you should not have any residue anywhere...

Mike's LS3

It's good maintenance to clean the MAF sensor periodically with electronics parts cleaner, but there should not be any oil on the MAF sensor. If there is it means excessive oil on the filter. After I installed my Halltech MF103 air intake, I checked my MAF sensor for any oil deposits, but it was clean. However, I did give the MAF sensor a quick spray for insurance.

I am still up in the air on the catch can.

sledmaster

Even if you are using the stock paper filter you still will get better throttle response when you clean the sensor every once and a while with CRC Mass Air Cleaner. I have used it for years.

s_c5519

Pretty much everyone in the Hummer forums have had a problem with the oiled K&N filter and the MAF on stock motors...

I went with them GM aftermarket performance "non-oiled" CAI on the H2 and it works fine...

I haven't yet looked into what the Vettes have for options, but both vehicle being in the same similar GM line, I personally would stay away from the oiled filters...

AORoads

I don't know about other brands, but if you pull a K&N out of its plastic wrap and install it, as is, that would be a mistake. It is, imo, far too heavily oiled. To do what peternj said above, I'd remove some of the oil before first installation with paper towels soaking it up. I'd also 'air-dry' it in direct sun, in a place where dirt won't get on it for a nice, long afternoon. Then, I'd install it.

el es tu

this just reminded me that I ran out of electric cleaner!

btw one other little maintenance thing that can be taken care of at the same time is the door contact pads. A little cleaning really helps speed up their reaction time

JoesC5

I use the best air filter element made. It's made by Donaldson, and uses nanofibers to filter out 99.97% of contaminants. It lasts for 50,000 miles and flows enough air to easily feed a 427 cu in engine running at 7,000 RPM. Oh, and it doesn't use any oil and will not release any oil that can coat the MAF and best of all, it comes as a standard equipment on all C6's. If that isn't good enough for you, then you can still make use of the Donaldson PowerCore technology and purchase the filter used in the ZR1, that filters just as well yet flows even more air and is a direct fit for the LS3/LS7. Just stop by your Chevrolet dealer and pick one up as it is standard equipment on all ZR1's.

hisvett

AND...if you tend to pull a lot of high R's & G's, like during a DE Track day, you will pull oil into the Mass Air Sensor...Personal experience here. I added two catch cans, one on the PCV and the other on the valve cover vent. I was rather surprised at the amount of oil the cans would collect after one event.....and to think all of that was going through the intake

slamminc6

Check out attack blue filters from TKO Performance. Ask for Ed, they use a special oil that will not clog or damage MAF sensors. Just put one in the car last weekend and love it. It def. breathes a lot better.

GOLD72

You said it perfectly. That Donaldson comes in an AC Delco box.

LS WON

I was warned by a dealership that alot of people who use these oilter filters end up messing up their MAF.

JoesC5

GM has experienced a lot of automatic transmissioned cars having all types of weird transmission shifting problems. GM will not work on any car, under warranty, that comes in with those symptoms, that have an oiled cotton gauze filter installed. They will not spend their dollars chasing problems caused by an aftermarket product. In fact there is a TSB that spells that out.

One of the problems, as I see it, is that people with the oil cotton gauze filters are in a dilemma. If they over oil the filter, they take a chance on screwing up sensors downstream, and if they under oil the filter, they take a chance of letting a bunch of dirt get through.

sledmaster

I think i am going to get a catch can because to much oil is getting into my intake from the PCV. I wiped out a lot of oil out when i switched my throttle body out yesterday. I have worked on my own cars for 37 years since i have been driving and i have never seen oil in a new cars intake manifold.

JoesC5

If you over oiled the oil bath filter on your new 1957 Chevy, you would see oil in the intake manifold.

TJay74

Actually any oil from the PCV system comes in after the MAF so it wont coat the MAF.

gsflyer2011

I have a hardly used (less than 50 miles on it) K&N filter for sale for 2011 GS), $20, you pay for the shipping.

marc8090

And you know it breathes better how?

LS WON

A Ford mechanic told me about the problems with people oiling these filters.
The Corvette I keep it factory stock and am using the original factory air filters.

JoesC5

Because they said it flowed 45% more air. Of course, how do they know their filter flows 45% more air if they haven't measured it and the stock Donaldson filter to determine their filter does, in fact, flow 45% more air?
If they have in fact measured the airflow of both filters using strict industry accepted protocols, then why don't they post the tests they performed, instead of just telling us they flow 45% more air? Same goes with filtration tests and laminar air flow tests.