JLT Oil Separator

[MiWiAu]

In my OCC how-to write up, there are some pictures in the beginning of the thread of oil pooling in the CAC outlet pipe to the point where it was seeping out of the intake tube and collecting on the valve cover. I definitely had motor oil in the intake system. I'm sure this had been collecting for the ~29,000 or so miles since the vehicle was new, but since installing the OCC, CSS, and doing the BOV VTA, I have not seen any oil return to my intake plumbing in the ~7,000mi since install, so one of those things must be doing something.


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[metroplex]

Can you take a pic of your rear valve cover PCV connection? I'm curious to see if the X sports are the same.

 

[MiWiAu]

Can you take a pic of your rear valve cover PCV connection? I'm curious to see if the X sports are the same.

Yep! I'll grab one one tomorrow when the sun comes out.


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[metroplex]

Mike,
As an update I contacted Thermoid, the manufacturer of the J1402A air brake hoses that JLT used for the JLT 3.0 separator. They said it is not rated for gasoline/fuel. I read J1402A and it only covers environmental resistance against oil, water, and ozone - which makes sense. Thermoid even said their air brake hoses have pin holes that would allow fuel vapors to escape. Thermoid recommend their SAE J30R6 or SAE J30R7 hoses for this application, which happens to be the SAE spec for PCV/EEC/Fuel hoses.

JLT did finally respond, but the fact remains the hoses were weeping out gas fumes in an engine compartment to the point I could smell the gas fumes in the garage.

Hopefully this doesn't happen to anyone else but it seems like EcoBoost owners are all using UPR or RX anyhow.

 

[MiWiAu]

That's wild that they would choose to use that hose. I wonder if that's the stuff they've been using since inception, or if it was a recent change. Thanks for the follow-up!

I still owe you a picture of my rear separator. I will try to do that first thing in the AM before I get sidetracked again.

 

[metroplex]

I think it depends on the application. Mustangs have gotten the hard OEM nylon tubing. I also saw the Thermoid air brake hose on other applications. If the engine isn't too boosted or doesn't have a lot of fuel dilution, air brake hose might be ok especall on a Mustang Gt where it may only see oil . As an engineer, I wouldn't even have bothered with that hose material though especially for this application.

 

[chrisjobe]

I run a JLT separator on my sho. Easy install but I am not noticing nearly the amount of collection some of you are. I went with JLT because Jay has always treated me right. Been using his products since he was making them one off out of requests on forums. 

 

[MiWiAu]

I run a JLT separator on my sho. Easy install but I am not noticing nearly the amount of collection some of you are. I went with JLT because Jay has always treated me right. Been using his products since he was making them one off out of requests on forums.

Did your kit also come with air brake hose? Curious if you were/are smelling fuel vapor like metroplex.

If you wanted to increase the efficiency of your JLT, you could also tee into the intake piping to provide PCV evacuation under boost. If memory serves, the JLT only connects to the IM, correct? In this case you would only get vacuum at cruise when you're not running any boost.

My RX collection is mostly water with a little oil. I'm guessing my collection volumes will be much lower when spring/summer rolls around and there is less moisture circulating through the system.


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[chrisjobe]

I run a JLT separator on my sho. Easy install but I am not noticing nearly the amount of collection some of you are. I went with JLT because Jay has always treated me right. Been using his products since he was making them one off out of requests on forums.

Did your kit also come with air brake hose? Curious if you were/are smelling fuel vapor like metroplex.

If you wanted to increase the efficiency of your JLT, you could also tee into the intake piping to provide PCV evacuation under boost. If memory serves, the JLT only connects to the IM, correct? In this case you would only get vacuum at cruise when you're not running any boost.

My RX collection is mostly water with a little oil. I'm guessing my collection volumes will be much lower when spring/summer rolls around and there is less moisture circulating through the system.


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I think its only on the clean side.

 

[MiWiAu]

That's the dirty side, and probably the intake manifold connection. The cleanside port is on the front bank near the oil fill cap. You don't need a catch can for the clean side, since that's primarily fresh air intake into the engine (with an occasional reverse flow burp).

This setup will not evacuate the dirty side during boost, but could be modified to do so fairly easily with some tees and check valves.


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[AlexAvani]

I put a jLT Oil separator.  Here is my install
https://youtu.be/EwcZtPXZaKM