• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Air/Oil seperator question!!!

  • Thread starter Thread starter mustangsquared
  • Start date Start date Apr 10, 2006

mustangsquared

Founding Member
Jun 8, 2002
828
1
16
new bern nc
Apr 10, 2006
#1
  • Apr 10, 2006
  • #1
I put an air/oil sperator on the passanger side line between the TB and the valve cover. I checked it after a couple of days driving...I had a almost clear fluid in it...what the heck is it?? It doesnt feel completely like oil....I dont get it. The engine was just rebuilt in February and only has about 5,000 miles on it. The oil has been changed...I am running 5W30 synthetic.
 
D

Daggar

New Member
Jul 19, 2004
3,902
5
0
Apr 10, 2006
#2
  • Apr 10, 2006
  • #2
Pics of the install required.

I don't want to jump to any conclusions because there's a lot here that's unknown. Initial guess is that you're picking up radiator fluid from the EGR spacer somehow. Either because what you've done is hooked up wrong or you've got a leak in the gasket spacer.

The worst theory:

If you've got that much moisture coming from the valve cover, then head gaskets are bad or a water jacket is broken. Check your oil for color or consistency. I can't imagine that you could capture that much water from your valve cover without having foamy coffee in the crank case.
 

mustangsquared

Founding Member
Jun 8, 2002
828
1
16
new bern nc
Apr 10, 2006
#3
  • Apr 10, 2006
  • #3
The oil looks good, no foam, nor is there any oil in the rad.

The install was easy....I simply placed the air/oil seperator in the hose that goes from the valve cover to the TB.

Picts will have to wait till I get off of work.
 
D

Daggar

New Member
Jul 19, 2004
3,902
5
0
Apr 10, 2006
#4
  • Apr 10, 2006
  • #4
Try dumping what's in the separator into a clear glass and letting it sit for an hour to see if it separates. I know it's humid as hell where you live and that the e-cam is good for pushing water out of the tail pipes before it warms up but wow... it sounds as if you've got a LOT of water getting into your separator.

My next step would be to cap off the lines going to the EGR and running it that way for a while to see if there's any difference. I certainly won't hurt anything to try.

Other than that, I'm at a loss.

One thing seems to be reasonably certain. Your piston rings seem to be great shape. lol None of that slop is making its way to your crank case if the oil is clean. I've heard of this sort of thing happening to folks who were running water/meth injection with crappy or clogged nozzles. It's definitely making me go "Hmmmmmmmm".
 

mustangsquared

Founding Member
Jun 8, 2002
828
1
16
new bern nc
Apr 10, 2006
#5
  • Apr 10, 2006
  • #5
I am using a seperator from LOWES (for air compressors...not bad for $30). I never thought about the condensation from the extreme changes in temp with the humidity and rain we have had. I emptied it last night so I will check it when I get home today....after 150 miles of driving I may have something in it.....and I will add one to the PCV side as well....maybe helpful to see what shows up on that side. That could narrow down the search for the issue...or widen the search.

Thanks for the advice.
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
Apr 10, 2006
#6
  • Apr 10, 2006
  • #6
This isn't really much of an issue.

I installed one of these separators a while ago and have the same thing.

What is happening is over night condensation builds up on the inside walls of the engine block. When you fire it up in the morning all of that moisture willevaporate and get pulled out the pcv. This is part of the reason for having the pcv. Your new separator is catching this moisture before it gets into your combustion chamber, which would be bad for the motor in the long term.

To verify this theory empty the catch can before starting the car in the morning, then check the can for moisture when you reach your destination. As long as the engine has reached full operating temp, you should have some moisture there.
Then, with the motor still warm, empty the catch can and do some more driving. At this point you should only find oil in the catch can.

Hope that helps
jason
 
You must log in or register to reply here.

Similar threads

R
What's it Worth? 1997 Cobra, a ton of mods and restoration
  • riored97snake
  • Jun 18, 2026
  • What is it Worth?!?!?
Replies
2
Views
116
What is it Worth?!?!? Jun 21, 2026
riored97snake
R
S
Requesting Guidance for 306 motor swap - Fuel? - SD? MAF?
  • So_Flo
  • Jul 26, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
32
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
Mcmahst
Help! Intake Manifold Gasket or Head Gasket?
  • foxbodyclark
  • Oct 4, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
95 Laser GT Ver
SOLD SOLD!!!! 1993 Notchback Roadracer For Sale. She's a beast!
  • Boydster
  • Apr 25, 2025
  • Fox Body Mustangs For Sale (1979-93)
Replies
0
Views
1K
Fox Body Mustangs For Sale (1979-93) Apr 25, 2025
Boydster
4.6 question for those in the know....
  • LILCBRA
  • Aug 30, 2024
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
15
Views
1K
2005 - 2014 S-197 Mustang -General/Talk- Sep 4, 2024
Adieu
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?