Well I had been noticing that my filter seemed a little bit dirty but never thought to check the turbo

Yesterday I noticed it had an oil residue which I could of sworn it was perfectly clean with the oem filter 15,000 miles ago

I just picked up and replaced with the napa 6637 part number filter

Do you think my amsoil filter wasn't working so great or would this residue be from a seal within the turbo?

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I say its time to give up the AMSOil filter... I'm not a fan of any washable filter just not with that kind of risk for such a expensive engine...

Now since the turbo looks like than I would look at the rest of the plumbing like the tubes and intercooler to be sure there isn't a bunch of oil and girt being drawn into the engine.

10 years later and 195K miles...

I too learned the hard way, I had a K&N and it had dirt and junk caked all the way to the intercooler.BHAF is the only way to go.

yep i picked up a bhaf from napa today and put it on as soon as i got home then i made the post :)im pretty disappointed i didnt just do that right away now it made everything all dirty it used to look like mikes.....well on the inside anywayi am relieved that its not the turbo having leaky seals though... and i dont believe that it would have really damaged it any would it have?im supposed to be trading this turbo for an s300g in a week or so and i dont want to give the guy a turbo thats been damaged

Another thing....Besides wiping it up with a rag or taking it off are there any ways I can clean it? It's not gritty just oily so I was thinking maybe a hot water misting/spritzing while it's running?Sent from my iPhone using Tapatalk

Personally I wouldn't want any of that going down in the air system towards the intercooler. Sad but it would be best to remove the turbo and wash it with a mild solvent. This means removing the compressor housing and cleaning it too. Removing the piping and clean it and possibly look in the intercooler.It might feel gritty but baby powder is really fine a smooth material but dust even that fine can ruin a set of rings.

Aww but it jut finally got cold and snowyOh well I guess it'll be coming off anyway if I get the s300g turboAnd your right why risk any more going through the engineSent from my iPhone using Tapatalk

Without a doubt, that's not a clean turbo. After years of reading Mikes posts, I think I'm as anally retentive as he is and I'd be the kinda person who would remove the turbo to clean it too but.....in saying that, it wont hurt anything if you opt not to clean it.

I'm just worried because i discovered it in removing the intake tube to double check that it was an hx versus hy.... Never actually had checked since all nv5600's HO's and hx35's go hand in hand... I think?Anyways I just found a trade with a s300g I want as to clean up my 7x9's ... He wants to go back to stock to save for ppump and larger turboBut now with this discovery .... Sounds like nothing would have hurt the compressor impeller itself ? Air cooler and everything else aside I just don't want to be the one to screw te other over.Sorry if I keep bringing this thread upSent from my iPhone using Tapatalk

The best I can say is that you'll know more when you pull the turbo off and clean the compressor housing because you'll see the full compressor wheel and the the inside of the housing and will be able to verify if its been rubbing or taken any damage.