OM617a owners, how long are you going between air filter changes? - Page 2 - PeachParts Mercedes-Benz Forum

n0rt75o · #16 09-03-2006, 10:37 PM

the filters in my diesels seem to last longer than gasser car filters,,,,n0rt

sailor15015 · #17 09-03-2006, 10:46 PM

Quote:

Originally Posted by Craig

It's usually not a great idea to open the air filter housing much more than necessary to check the filter, you really don't want any debris in the air intake on a diesel. I don't even want to think about driving one without a filter.

Yeah I cringe every time I have to open mine because I can see things floating down the hole and its hard to get it really clean. BTW, I change mine every other oil change, or about every six months.

H-townbenzoboy · #18 09-03-2006, 11:07 PM

Quote:

Originally Posted by Hatterasguy

I paid $8 for an STP Fed filter for a 617 in a W126. Don't know if the W123 uses the same filter.

What's STP's part number for this filter?

Hatterasguy · #19 09-04-2006, 09:26 PM

SA3725

Its a cheap filter though, if it was a car I planned on keeping I'd cough up the extra $6 for a nice Hengst from Phil.

Just changed it after one winter's worth of use, about 5k miles. It was black and pretty dirty.

pawoSD · #20 09-04-2006, 10:34 PM

I'll probably order one the next time I buy parts, but my current one has been in there probably about 1.5ish years or so...so about 17-18k

Its fairly dirty.....but air still seems to be going through it.

(I use the nice Hengst ones)

Hatterasguy · #21 09-04-2006, 10:42 PM

Now here is a queston, why does the air filter get so much oil vapor in it? I have noticed it tends to turn black with these cars, I have never seen such a thing with the 603's.

The crankcase vent hose seems to feed into the center of the air filter?

#22 09-04-2006, 10:53 PM

Quote:

Originally Posted by Hatterasguy

Now here is a queston, why does the air filter get so much oil vapor in it? I have noticed it tends to turn black with these cars, I have never seen such a thing with the 603's.

The crankcase vent hose seems to feed into the center of the air filter?

I actually fixed that on mine. The oil separator has a "cover" piece that is held in place with a couple of little steel tabs. It's not a very tight fit. If you remove the air filter housing and clean it very well, you can seal the cracks in the separator (as well as the little tube that feeds into the air intake) with silicone glue. I did that a couple of years ago and I still do not get a drop of oil on the filter element.

P.E.Haiges · #23 09-05-2006, 01:03 AM

SA3725,

U drive your car in CT in the winter and U worry aboutthe air cleaner. How about all the rust on the body from the salt?

I'd rather drive with no air cleaner than drive in salt. My good MBs stay in the garage all winter. NO salt, no rust.

U can't tell the condition of a filter by looking at it. U need to test it as I do.

P E H

Hatterasguy · #24 09-05-2006, 12:34 PM

The point of the SD is to rust in the winter, its already to far gone to be worth bringing back, but it drives nice enough.

The old one looked dirty so I stuck in a new one, I don't want deal with it.

JEREMYC · #25 09-05-2006, 03:19 PM

Quote:

Originally Posted by Craig

I actually fixed that on mine. The oil separator has a "cover" piece that is held in place with a couple of little steel tabs. It's not a very tight fit. If you remove the air filter housing and clean it very well, you can seal the cracks in the separator (as well as the little tube that feeds into the air intake) with silicone glue. I did that a couple of years ago and I still do not get a drop of oil on the filter element.

Can anyone be more specific on what the oil seperator is or have pics of it? My air filter gets really oil soaked in particlular spot on the filter. Sorry, don't mena to be a hi-jacker here, just seems on topic.

#26 09-05-2006, 03:45 PM

Quote:

Originally Posted by JEREMYC

Can anyone be more specific on what the oil seperator is or have pics of it? My air filter gets really oil soaked in particlular spot on the filter. Sorry, don't mena to be a hi-jacker here, just seems on topic.

The oil separator is the "container" inside the air filter housing that the vent hose connects to. If you take the cover off the air filter, you will see it, it has a connection on the top and a little tube that sends the oil vapors into the "throat" of the air intake. If you look closely, the separator has a "cover" that is held in place with a couple of metal tabs that are bent over. There is a seam around the edge of this cover that can leak. Also, the little tube has a seam that can leak. I just took the entire thing apart and cleaned it, then sealed all the seams with silicone glue. No more oil spot on the filter.

I don't have my 300D here at the moment, but I can post a photo later if that will help.

JEREMYC · #27 09-05-2006, 04:45 PM

I'll check it out this evening, I bet I can figure it out. Once again, the folks on this forum are ever so helpful. Thank you all.

vstech · #28 09-05-2006, 11:36 PM

Quote:

Originally Posted by H-townbenzoboy

What's STP's part number for this filter?

really, the stp filters are very poor quality. they are also about 1cm shorter thus they don't seal properly. for the same price at "another" store, you can get the purolator filters, they are almost the same quality filter as hengst, but it doesn't have the steel mesh around it. and they fit.

John