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Hi All! I've mostly been just watching and reading the threads on here, but had a question that I thought I'd ask about!

I'm currently dealing with trying to find the source of some oily film in my DD 2012 X5 35d charge pipe and it got me thinking about catch cans and how I probably should have installed one 100k miles ago on the X5.

Do you all plan on installing an oil catch can after the CCV/PCV line right away in the GRC? Why would you/would you not? Just curious as I am trying to learn more and more every day.
 

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Personally I found it a waste if time even on my old MR2 Turbo. I fitted a full on SMC large airline filter that took out everything and after a year or so pulled it out as it was doing nothing. Any significant oil in the intake comes from worn turbo seals. If you run a top quality synthetic oil from new and change it on a regular basis the engine internals stay clean and the factory recovery system works well enough.
 

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I really really depends on the engine. I haven't done any research on OCCs on the GRY (the only car with this engine), but I know my 2.0 Ecoboost from Ford has some serious blow-by straight from the factory, which helps contribute to gunk building up on the valves (direct injection only) and all the other things blowby can cause.

I installed an OCC on my focus at 100k miles. I'm currently at 104k, and decided to check the can. It's definitely doing it's job.
 

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It's a FORD say no more. Let's try and stick to Toyota's.

Direct injection only is a bad idea. Decent engines have gone both port and direct for a number of reasons.
My point wasn't ford vs toyota or any other brand. My points is solely to say it depends heavily on the engine. And yes, DI only does suck. Almost all performance cars (and most turbo'd cars) have moved to dual injection for good reasons, like you said.

Also, hate on it all you want, these 2.0s can take an absolute beating. Lots of folks on the forums with 200k+ miles that drive these things like bats outta hell with no issues. Like most cars, regular maintenance is the secret to long lasting engines. But I don't want to turn this thread into a car pissing battle.
 

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Based on some very basic research on the GRY forums, it seems they do catch oil, but only a tiiiiny amount. Basically, money is better spent elsewhere, unless you just want it looks under the hood looks
 

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Based on some very basic research on the GRY forums, it seems they do catch oil, but only a tiiiiny amount. Basically, money is better spent elsewhere, unless you just want it looks under the hood looks
Good to know, I'd probably only look that direction if I was tracking the car regularly. Even with small amounts of oil I think they're a worthy investment.

Had them on both my RS and Shelby, both those cars benefited from catch cans.
 

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G16E-GTS has both direct and port injection. You might benefit from a catch can (an air oil separator would be better IMO and I believe is already included in the GRY) but not as much as on a DI only car (like the ND miata)
 

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I'd say the main benefit of a catch can or AOS would be preventing the IC from being coated in oil. You could always run some seafoam or similar to clean valves. Really cleaning the IC out with gasoline and the charge piping can be a pain. I'd probably do one at some point, hopefully Radium will make a kit or something.
 

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I'd say the main benefit of a catch can or AOS would be preventing the IC from being coated in oil. You could always run some seafoam or similar to clean valves. Really cleaning the IC out with gasoline and the charge piping can be a pain. I'd probably do one at some point, hopefully Radium will make a kit or something.
The catch can does next to nothing, I put one on my MR2 and then removed it again. Any significant oil in the inlet piping indicates your turbo seal has gone on the compressor side. Most of the time you are driving with vacuum pressure in the turbo and it just sucks oil through stuffed seals. When it gets to this level it also starts building up on the spark plugs in grey chunks. The tiny amount of oil through the PVC has zero effect on the engine. Its all about decent quality oil and regular changes to keep everything running like new. If there is any visible liquid oil whatsoever in your intake the turbo seals are gone.
 

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The catch can does next to nothing, I put one on my MR2 and then removed it again. Any significant oil in the inlet piping indicates your turbo seal has gone on the compressor side. Most of the time you are driving with vacuum pressure in the turbo and it just sucks oil through stuffed seals. When it gets to this level it also starts building up on the spark plugs in grey chunks. The tiny amount of oil through the PVC has zero effect on the engine. Its all about decent quality oil and regular changes to keep everything running like new. If there is any visible liquid oil whatsoever in your intake the turbo seals are gone.
It would depend on how the PVC is routed. I'd imagine crank and valve breathers are usually routed to the inlet to be burned off in the combustion chamber. There are a lot of misconceptions and confusion regarding PVC systems and their routing too. I'm not totally sure how Toyota handles this from factory?
 

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PVC on the MR2 is routed in between the air filter and the Turbo it's pretty easy to trace. There is a lot of positive pressure in the 3SGTE because if you remove the oil filter cap while the engine is running at idle the engine basically dies.
 

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Hi All! I've mostly been just watching and reading the threads on here, but had a question that I thought I'd ask about!

I'm currently dealing with trying to find the source of some oily film in my DD 2012 X5 35d charge pipe and it got me thinking about catch cans and how I probably should have installed one 100k miles ago on the X5.

Do you all plan on installing an oil catch can after the CCV/PCV line right away in the GRC? Why would you/would you not? Just curious as I am trying to learn more and more every day.
I'll look at adding one. I have an OCC on my 2009 Corolla S 5MT that I turbocharged, my 2017 Corolla iM 6MT, my wife's 2010 Prius, and I have one to install on my 2006 Scion xB 5MT. I've had excellent results with them catching gunk and keeping the intake manifold much cleaner. On the Prius it's a huge benefit and it widely recommended in the Prius forums. Here is the one on my 2009 Corolla S Turbo 5MT.
White Light Product Motor vehicle Automotive design


This is my 2017 Corolla iM 6MT.
Automotive tire Hood Motor vehicle Tire Automotive design


This is my wife's 2010 Prius.
Hood Automotive design Automotive tire Bumper Carbon
 
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