Another oily intercooler.

[Ironmonger]

I understand now why so many people run catch cans. Discover a fair amount of oil coming from throttle body side of intercooler when switching it out for a mountune. I know what I will be buying next.

 

[M-Sport fan]

Yes, many on here claim that they do not catch all that much oil mist over and above the factory system, but to me at least, if it keeps even just ONE OUNCE per 3500 mile oil change interval out of my combustion chambers, and off of my intake valves, it is more than 'worth it'.

 

[Intuit]

A catch can in a pressurized compressor line, and at the lowest point in the system?
(or on a bend where it would be thrown into it)

Is the oil from the crankcase/valvecover or from the turbo or both?

If it's from the turbo, is it typical for the seals to leak that much oil?
Seems like that would be an issue with the seals in the turbo?
Changes from stock?

 

[FocusedSlayer]

Catch can was something I did not to long after getting my 19 , I empty it every other oil change and you would not believe the oil it catches. Its not a lot per sey but it's doing its job.

 

[M-Sport fan]

Of course no one is going to install a catch can in the actual charge hose line/path, and that oil Ironmonger is seeing has to be from the turbo oil seals.

But the OCCs do cut down on the oil mist getting into the combustion chambers from the recirculation of them into the intake manifold from the factory PCV system.

Why have BOTH whatever oil mist/vapor the factory system is dumping back into the intake manifold, in tandem with whatever is getting into the intake tract from the turbo oil seals dumping it into the charge pipes/hoses, all going into the chambers, and therefore onto the intake valves??

 

[Ironmonger]

I believe oil is coming from throttlebody side as it had substantially more residue than the turbo side. I haven't noticed any oil loss or burning on startup/ warm up so hopefully not a turbo seal. Once my rmm gets delivered I will investigate further upon installation.

 

[M-Sport fan]

As Intuit has asked above, do our factory turbo oil seals naturally 'weep' a little bit of oil as a 'matter of course' even when functioning properly, and not fully gone, or ANY trace of oil whatsoever means they are shot?

 

[Intuit]

Well, the fact that there's a procedure, suggests that this is an expected condition?



The oil separator appears to be right above the oil filter...



If you can determine where its line(s) tap into the intake, you may be able to determine whether it's the source of the oil.

The Powertrain Control Emissions Diagnosis portion of the manual, unfortunately is *very* generalized and non-specific to our setups. Lazy bastards; could've done better for a $200 or $300 manual. 🙄

 

[TyphoonFiST]

Meh... An OCC is just another leak point for Boost. I had A Damond OCC BUT* After i went 4 port Aux. there was nothing left to catch in the can. Food for thought