Just checked my oil catch can.. - Toyota 4Runner Forum

jahdai42 · 04-17-2019, 08:43 PM

So I put this sucker on 22 days ago and it already has an ounce of oil in there. It is also pitch black. I should have got one of these when it was new.

Volke · 04-17-2019, 09:32 PM

The oil in your catch can isn't necessarily an accurate representation of what's in your engine unless you have let it sit for a long time. It gets black and gunky from the moisture, but the oil in your engine burns most of that off when it gets hot enough. The oil in the catch can stays at roughly ambient temperature under the hood.

57buick · 04-17-2019, 11:31 PM

I installed one a couple weeks ago, looking forward to seeing what mine catches.

wcjeep · 04-17-2019, 11:58 PM

I could see a benefit if the vehicle was subject to long term steep incline/decline. Not sure what the benefit would be for normal daily driving. It's designed to go without the catch can.

jahdai42 · 04-18-2019, 07:23 AM

Quote:

Originally Posted by wcjeep

I could see a benefit if the vehicle was subject to long term steep incline/decline. Not sure what the benefit would be for normal daily driving. It's designed to go without the catch can.

It really is just to keep that gunk out of the intake plenum. Nothing more.

Mantilgh · 04-18-2019, 09:14 AM

Quote:

Originally Posted by wcjeep

I could see a benefit if the vehicle was subject to long term steep incline/decline. Not sure what the benefit would be for normal daily driving. It's designed to go without the catch can.

Because that oil vapor condenses in the in the intake system and coats it. It can build up in the intake runners and on the back of the valves, more so on direct injection engines. It can coat and cause issues with the throttle body if it’s plumed in before it. The vaporized oil mixture is also probably not great for the combustion process, because it’s messing with the air/fuel ratios

The system is there for emissions/EPA.

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97BlackAckCL · 04-18-2019, 11:37 AM

Quote:

Originally Posted by 57buick

I installed one a couple weeks ago, looking forward to seeing what mine catches.

Any write up or detail of the install for this?

57buick · 04-18-2019, 06:59 PM

Easy install. First I bought the catch can below on Amazon. After doing research on catch cans and decided what kind of internal construction was best for catching contaminates.

Second, I removed that factory bolt on front of engine in picture, it had a small lip sticking out on factory bracket that kept my bracket from sitting flush so i ground that tab off, drilled a hole in my catch can bracket and bolted it back on.

Third, replace the pcv hose with your own hose going from the pcv to the catch can, then run a second hose from catch can to where the PCV valve originally went back into engine.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Mantilgh · 04-19-2019, 01:35 AM

After saying what I said earlier. It really isn’t all that harmful in general, possibly depending on the condition of the engine.

But if you’re a person that buys vehicle and keeps it, it is a preventative measure. I think it’s something that should help keep the intake track cleaner, possibly helping reduce problems later.

I just pulled the intercooler off my 02 WRX thinking it would help me get to a hose I need to replace.

Stock PCV set up, which is routed in just before the turbo. 280,000 miles

Turbo outlet

Throttle body

Could be worse, but could be better. I imagine there’s decent amount in the intercooler too because of the lack of it on the TB.

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Wrexeter · 04-19-2019, 02:41 AM

Quote:

Originally Posted by Mantilgh

After saying what I said earlier. It really isn’t all that harmful in general, possibly depending on the condition of the engine.

But if you’re a person that buys vehicle and keeps it, it is a preventative measure. I think it’s something that should help keep the intake track cleaner, possibly helping reduce problems later.

I just pulled the intercooler off my 02 WRX thinking it would help me get to a hose I need to replace.

Stock PCV set up, which is routed in just before the turbo. 280,000 miles

Turbo outlet

Throttle body

Could be worse, but could be better. I imagine there’s decent amount in the intercooler too because of the lack of it on the TB.

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A turbo with a lot of miles on it will leak oil past its seals. At 280k miles, that shaft probably has a lot of play in it, and likely lets a lot of oil past its seals.

Every turbo car will burn oil, which means it is also putting it into the intake system as well.

So yes, if you look in your intercooler, it will have oil in it. Its also why those rubber intake hoses feel oily... the pressure eventually makes them leech oil.

WAT4R · 04-19-2019, 09:28 AM

Quote:

Originally Posted by 57buick

Easy install. First I bought the catch can below on Amazon. After doing research on catch cans and decided what kind of internal construction was best for catching contaminates.

Second, I removed that factory bolt on front of engine in picture, it had a small lip sticking out on factory bracket that kept my bracket from sitting flush so i ground that tab off, drilled a hole in my catch can bracket and bolted it back on.

Third, replace the pcv hose with your own hose going from the pcv to the catch can, then run a second hose from catch can to where the PCV valve originally went back into engine.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

What size / type hose did you use?

57buick · 04-19-2019, 10:30 PM

Quote:

Originally Posted by WAT4R

What size / type hose did you use?

cant remember think it was 3/8

Texas_Ranger · 04-21-2019, 10:51 AM

Its a 3/8 OD vacuum line but the fitting from the crankcase is slightly smaller then the one going into the upper manifold. For the smaller one you might want to use a ring gear to tighten it down. I used the spring that was one it and a zip tie to tighten it down even more so. I put mine in yesterday.

4RunnerAquasport · 05-24-2019, 02:24 PM

Installed mine today. I have too much other crap mounted in various places around my engine bay, so I had to come up with an alternative and secure spot. The drivers side intake bracket works quite well and the whole assembly is easily removed when I need room to work. @wfo9 thanks for the Moroso recommendation.

SparkySparks83 · 06-25-2019, 12:30 PM

Coming from a high boost direct injection platform where it was common to us an oil catch can to keep thing clean and running smooth. The occ should be mounted so it is the lowest point in the system so any oil vapors in the hose run back into the catch can.

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