Oily inside / oily sweaty inter cooler hose (not blow by) - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand

SBR Offroad
Find out how to advertise on Ausjeep?

Go Back   AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand > JEEP GARAGE > WK WK2 Grand Cherokee


Portal Register Forums Trading Your Jeep New Garage Mark All Read

Post New Thread  Reply
 
Thread Tools Search this Thread
  #1  
Old 1 Week Ago
thanwintun  thanwintun is offline
I just registered
 
Join Date: Apr 2014
Posts: 14
What Jeep do I drive?: WK2
Likes: 0
Liked 3 Times in 2 Posts
Default Oily inside / oily sweaty inter cooler hose (not blow by)

Hi
My wk2 diesel has 120k km atm. I ve been seeing oil sweat on the inter cooler hose and always thought that is 100% from pcv (centrifugal oil separator really is).
I tried a few catch cans and not happy with the result and decided to vent to atmosphere through big Caterpillar breather. Now about two months after doing that with plugged to the intake. I expected to see 100% dry in the intake. But i still see some oil sweat on the hose and some thin oil film inside.
I am a Heavy duty fitter working in a mine and i have changed turbos and hoses/pipes many time on heavy machinery, but never seen oily inside even after 12000 hours when we change as preventive maintenance considering end of component life.

Another way i tried is i disconnected turbo outlet and asked my wife to rev up to see if any oil against white paper towel that i held . i didn't see any oil though. Maybe not enough to be visible.

So my question is on these modern CRD's is it normal? Has anyone has similar experience? kind of still seeing some oil after installation of reputable catch can etc.
btw i buy rotella t6 from the states and change every 10k.
Should I try thicker oil like 15w40?
I owned this car since new and really want to keep it another 100k or so.

Thanks in advance
  #2  
Old 1 Week Ago
SouthernComfort's Avatar
SouthernComfort  SouthernComfort is offline
CrawlerStar
 
Join Date: Dec 2017
Location: Melbourne
Posts: 348
What Jeep do I drive?: WK2
Likes: 131
Liked 127 Times in 74 Posts
Check out my Ride(s)
Default

I've had the same oil 'sweat' on the IC hose both before/after fitting a Provent 200 catch can, and before/after changing to 5W40. I've always been baffled as to how an oil film forms on the outside of the hose. Whatever the cause I can't see that it's anything to do with oil viscosity or method of venting as nothing seems to make any difference.
__________________
MY13 GC Laredo CRD Mineral Grey
Sponsored Posts
  #3  
Old 1 Week Ago
Troutman  Troutman is offline
Full Flexer
 
Join Date: May 2003
Location: NE Victoria
Posts: 733
What Jeep do I drive?: WK2
Likes: 1
Liked 123 Times in 82 Posts
Default

Well if you rule out oil coming from the PCV side of things, then you're really left with the turbo as the likely source of any oil film on the IC hose.
__________________
MY15 WK2 CRD Laredo
  #4  
Old 1 Week Ago
08crd's Avatar
08crd  08crd is offline
Full Flexer
 
Join Date: Jul 2008
Location: Perth Western Australia
Posts: 700
What Jeep do I drive?: WK2
Likes: 72
Liked 103 Times in 79 Posts
Check out my Ride(s)
Default

The only time I've had oil on the outside of a hose, it was the hose between the turbo and intercooler, both times the hose had a small split in it.
Once on a LR Disco, second on the Commander.
Sponsored Posts
  #5  
Old 1 Week Ago
MidnightMods  MidnightMods is offline
Lowranger Shocker
 
Join Date: Jun 2012
Posts: 1,731
Likes: 7
Liked 133 Times in 104 Posts
Default

08crd, oil will seep outside the rubber hose and sweet out over time. the JK's all suffer from this.

Unless you completely clean the intake you are never going to see a crystal clean intake even after removing the crank case hose from the intake stream.
  #6  
Old 1 Week Ago
thanwintun  thanwintun is offline
I just registered
 
Join Date: Apr 2014
Posts: 14
What Jeep do I drive?: WK2
Likes: 0
Liked 3 Times in 2 Posts
Default

Yes. It is definitely from turbo. I still hoping it is normal as it is very minimal but enough to sweat outside. If not, I think Id better prepare to replace or rebuild the turbo.
But atm apart from that, no oil consumption , no power loss as far as I can notice. Also it is blowing a lot of air when revving.

So another curious is most of the owner with hpd, provent catch cans, are they happy? Like SouthernComfort said are they still having oily inter cooler hoses?
Sponsored Posts
  #7  
Old 1 Week Ago
GCDingo  GCDingo is offline
CrawlerStar
 
Join Date: Jul 2015
Location: Perth
Posts: 440
What Jeep do I drive?: WK2
Likes: 21
Liked 88 Times in 70 Posts
Default

Quote:
Originally Posted by thanwintun View Post
So another curious is most of the owner with hpd, provent catch cans, are they happy? Like SouthernComfort said are they still having oily inter cooler hoses?
I have fitted a provent from brand new and yes still getting oil through. I have cb engineering pipes so very little silicone to seep but I can see some residue seeping out at the intercooler pipe join right at the intake manifold. My provent hoses weep like crazy though. Remember a filter can not be 100% efficient or it would just be a blockage and not pass anything. I think it is just one of those maintenance things that will have to be done from time to time if you care to.

I would be interested to know if the oil residue that eventually coats the entire intake system would really effect intake temperatures. I'm guessing it would be negligible.
I think more of the issue is the caking of the intake from the EGR and crankcase vapour mixing. EGR delete would be more beneficial in my opinion. Just harder to do without an ECU remap. Catchcan anyone can fit without going into legalities of things.
__________________
2015 Granite Limited
2018 V6 Dark Label Amarok
1965 Mustang Coupe in pieces
Nothing standard
  #8  
Old 1 Week Ago
Troutman  Troutman is offline
Full Flexer
 
Join Date: May 2003
Location: NE Victoria
Posts: 733
What Jeep do I drive?: WK2
Likes: 1
Liked 123 Times in 82 Posts
Default

The other issue with the oil film is it makes it very hard if not impossible for the intercooler to cool the incoming air. Oil is an insulator, so no good once it coats the insides of the intercooler.
__________________
MY15 WK2 CRD Laredo
  #9  
Old 1 Week Ago
GCDingo  GCDingo is offline
CrawlerStar
 
Join Date: Jul 2015
Location: Perth
Posts: 440
What Jeep do I drive?: WK2
Likes: 21
Liked 88 Times in 70 Posts
Default

I agree in theory as said before but really by how much? I think it is negligible. I think you would be talking less than 5k temp difference in a quite oily situation.
__________________
2015 Granite Limited
2018 V6 Dark Label Amarok
1965 Mustang Coupe in pieces
Nothing standard
Post New Thread  Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


» Advertisements_AS2


Powered by vBadvanced CMPS v3.2.3



All times are GMT +10. The time now is 12:38 AM.




AJOR does not vouch for or warrant the accuracy, completeness or usefulness of any message, and are not responsible for the contents of any message. The messages express the views of the author of the message, not necessarily the views of AJOR or any entity associated with AJOR, nor should any advice be substituted as technical advice replacing that of a mechanic. You agree, through your use of this service, that you will not use AJOR to post any material which is knowingly false and/or defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, religious, political or otherwise violative of any law. You agree not to post any copyrighted material unless the copyright is owned by you or by AJOR. The owner, administrators and moderators of AJOR reserve the right to delete any message or members for any or no reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold harmless AJOR, the administrators, moderators, and their agents with respect to any claim based upon transmission of your message(s). The use of profile signatures to intentionally mislead or misdirect any member on this forum is not acceptable and may result in your account being suspended. Any trip that is organised through the AJOR forum is participated at your own risk. If you or your vehicle is damaged it is your responsibility, not that of the person that posted the thread, message or topic initiating the trip, nor the organisers of AJOR or moderators of any specific forum. This forum and associated website is the property of AJOR.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

AJOR 2002 - 2019 AUSJEEPOFFROAD.COM. All corporate trademarked names and logos are property of their respective owners. Ausjeepoffroad is in no way associated with DaimlerChrysler Corporation or Fiat Jeep.
www.ausjeep.com www.ausjeep.com.au www.midlifemate.com ausjeepforum.com Jeep Wrangler JL Australia release
vB Ad Management by =RedTyger=