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-   -   Oil separator hose "sweating" oil (http://mustangforums.com/forum/2005-2014-mustangs/707853-oil-separator-hose-sweating-oil.html)

ghunt 03-18-2014 12:06 PM

Oil separator hose "sweating" oil
 
I used a Jeg's universal oil separator on my car (didn't have $100 to drop on one of the ready made ones) and plumbed it with 3/8" fuel hose.

It works great, but the problem I'm having is that after the car sits for a little while the hoses have a little droplets of oil form along the length of them on all sides of the hose. If you wipe it off with a paper towel it just comes back after the next time you run the car and it sits and cools off. I've never noticed it while the car was running, only after cooling down.

I figured fuel hose would work great for this but apparently not. Do I need a different type of hose? Do the aftermarket separators/catch cans all use that hard plastic hose?

Goldenpony 03-18-2014 12:28 PM

I have never noticed anything like this with my UPR catch can.

vixr 03-18-2014 03:22 PM

apparently, there is "emissions" hose that should be used for this job...

ghunt 03-18-2014 06:42 PM

Well I went to advance auto parts...they have "PCV hose" that is all in 32nds so it all appears to be the wrong size...and fuel injection hose which is way expensive.

Maybe I just gotta buy the closest size of the PCV and make it work.

70monte 03-18-2014 07:05 PM

You are probably using some type of heater hose and the oil is going right through it. I had the same problem when I installed a UPR can on my 14 GT. I didn't use the supplied hose because it was half collapsed so I went to the parts store and bought some heater hose not realizing it was not suitable for oil.

I later had to go back and get some PCV/emissions type hose and didn't have anymore problems.

Wayne

tx_zstang 03-18-2014 07:17 PM

Yeah, sounds like regular "hose" and not oil resistant.
If the hose is soft, it is definitely junk.

Did you put it on the passenger side (with 3/8" hose or driver side)? The driver side uses a larger hose, closer to 5/8". And some 'kits' have the cheaper softer hoses.

Post up a pic and we can help put more :)

2005Redfire6 03-18-2014 07:22 PM

Mine would do the same thing using heater hose with a UPR catch can. It wouldn't be oil though because it would wipe away clear, it would be condensation.

Goldenpony 03-18-2014 09:27 PM

I have the UPR can on my '06 GT, the one with the upgraded braid covered hose and the Ford factory type connectors. Definitely worth the extra $ for the upgrade kit. Best can on the market.

ghunt 03-19-2014 06:07 AM

Ahh I'm stupid...it is heater hose, I looked at it last night. I forgot which side I was thinking about too, because it's 1/2" on the driver's side.

I'll pick up some of that PCV hose from the parts store and replumb it...

2005Redfire6 03-19-2014 07:11 AM

Quote:

Originally Posted by ghunt (Post 8363919)
Ahh I'm stupid...it is heater hose, I looked at it last night. I forgot which side I was thinking about too, because it's 1/2" on the driver's side.

I'll pick up some of that PCV hose from the parts store and replumb it...

You sure it is tight enough on the fitting and it isn't loose enough for some of it to come out and travel down the hose?

ghunt 03-19-2014 11:03 AM

Quote:

Originally Posted by 2005Redfire6 (Post 8363937)
You sure it is tight enough on the fitting and it isn't loose enough for some of it to come out and travel down the hose?

No...it's definitely "sweating" through the hose somehow. There's no other way it would end up on the entire length of the hose, and it's definitely oil.

Derf00 03-19-2014 02:42 PM

Quote:

Originally Posted by ghunt (Post 8364039)
No...it's definitely "sweating" through the hose somehow. There's no other way it would end up on the entire length of the hose, and it's definitely oil.

Heater hose isn't made for the hydrocarbons in fuel and oil so yes, it is sweating through the hose. It will eventually harden it as the rubber in the hose is destroyed, then it will crumble.

PCV hose or emissions hose will work for what you need. Those are typically sold in prepackaged lengths and not by the foot. It doesn't need to be hard plastic line.

70monte 03-19-2014 04:22 PM

The PVC/emission hose that I bought was sold by the foot and was on a big roll. It was not the hard plastic type of hose either.

As far as the UPR can being the best on the market, I will have to disagree. I had one on my 2014 GT and after having to replace the heater hose that I had on there originally, I discovered oil inside the hose at the intake as well as inside the snap connector that snaps on at the intake. I bought a Bob's oil separator after that and so far I've not found any oil at the intake connector.

I just went out and checked the hose at the intake on my fiancée's 2007 GT that is running a UPR can and it had oil inside the hose as well as on the intake port that the hose attaches to. This is the first time I've checked the one on her car since it was installed.

I contacted UPR about this issue when I discovered it on my car but have not heard back on what the resolution is. I'm going to call them back now that I've checked her car and found the same thing.

Wayne

Goldenpony 03-19-2014 04:24 PM

Let us know what UPR says. Their customer service is very good.

70monte 03-19-2014 06:10 PM

I will let you guys know. I emailed the guy I have been dealing with to tell him about her car and to find out if they have figured out anything to prevent this. He did tell me before that some oil will get through but personally I don't want to run a can that lets oil through even if it's just a little. The main reason I bought these cans was to prevent oil from reaching the intake.

Wayne

Goldenpony 03-19-2014 10:32 PM

I would be very surprised if any can were absolutely 100% effective for removing every bit of oil from the PCV system. I used to have those smoky startups with my '06 GT before my UPR can. That is totally gone. After 120,000 miles my spark plugs are absolutely clean, not a hint of oil on them.The can is roughly 3/4 full after 2500 miles.

70monte 03-20-2014 05:19 AM

I will say that the UPR can does catch a lot of oil so I was happy with it's performance in that manner but when I read about other cans on the market that people have said show no signs of oil at the intake hose, than I would rather have one of those. Bob's can and the Moroso can are two that come to mind.

I put the UPR can on my fiancée's car because she was getting the smoky startups and her 07GT only has 15,700 miles on it. I have not had a chance to see if the smoky startups are gone.

Looking at the design of the UPR can, I have my own theory as to why oil is still getting past the SS mesh and going into the output hose to the intake. I did tell UPR what I thought and they were going to be looking into that.

Goldenpony,
Have you checked the line at the intake port to see if you have oil in your line?

Wayne

dusman59 03-21-2014 01:19 PM

I have checked my UPR can and have had around 1 to 2 ounces after driving 2500k miles. I also have checked several times the intake hose and it has been bone dry. I mounted the can higher up on the firewall and used PVC hose and covered with braid with Ford connectors. I also down shift a lot which to me would add more oil into the intake. I believe the can is doing its job just fine.

70monte 03-21-2014 09:46 PM

Quote:

Originally Posted by dusman59 (Post 8365097)
I have checked my UPR can and have had around 1 to 2 ounces after driving 2500k miles. I also have checked several times the intake hose and it has been bone dry. I mounted the can higher up on the firewall and used PVC hose and covered with braid with Ford connectors. I also down shift a lot which to me would add more oil into the intake. I believe the can is doing its job just fine.

If your intake hose is dry than your can is doing what it is supposed to do. On my 14 GT, I had the can mounted where UPR suggests to mount it and on my fiancée's 07 GT, it is mounted high up on the firewall and hers still had oil in the intake hose. Maybe I just got two defective cans? I checked the intake hose on my Bob's can yesterday that's on my 14 GT and it was dry at the quick connect on the intake. I still have not heard anything back from UPR.

Wayne


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