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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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Do you live in an extremely high humidity area?

My GT has just over 5K miles. I live in Florida - lots of humidity. When I empty the catch can it is PURE oil - not a watery mixture like in your picture.

When you open your oil fill cap what does the inside of the engine look like? Is it clear oil or do you see a white mixture like in your catch can?

What the oil looks like in my catch can:

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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I have owned my Forte GT for 2 years now - and it has a little over 5K - so I don't drive it long distance much. When I do drive it, I intentionally take longer routes to keep trips over 5 miles. It is also garage kept. I do change my oil using the severe duty chart - 5-6 months...because I'm anal that way.

The OP stated in his first post that he drives 20 miles one way - that should be enough to burn off moisture in the engine crankcase. I would NOT be happy if the oil in my catch can looked like the OP's! Keep an eye on your coolant reservoir.
 

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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Talking about this subject. My GT is like yours, but mine has 9K miles. Do you recommend using a catch can on the GT? I've been debating if I should install one. I feel like mine has lost some power. Would the lack of a catch can affect its performance? I live on a small island, so humidity is all year long.

Based on your picture, how long did it take to accumulate that much oil?
Yes, I recommend a catch can - if - IF you are diligent with emptying it.

The amount of oil in my catch can picture is from less than 500 miles.

While there is conflict over whether or not a catch can is effective the fact is that amount of oil would have gotten to the intake without the catch can.
 

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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Is there a recommended amount of miles driven to check a catch can? Like every 500 or 1000 miles or something more?
I read a Mishimoto instruction sheet where it said to check it every 1000 miles. In reality you should check it that often until you get a "feel" for how your car operates. If checking it at 1000 miles and it is only 10% full of oil you can check it at 2000 miles - and extend that if the oil level still stays low - as long as it never fills to the level of the internal separator.
 

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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6,971 Posts

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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6,971 Posts
The only way it should look like the OP's photo is if the car sits out in the weather all the time and the local temperatures fluctuate a lot with extreme humidity - like when you come out and the car is completely covered in dew. However, it's hard to believe it could get that much moisture in the crankcase to cause that.
 

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2021 Forte GT w/GT2, Currant Red, Wagner-Tuning Intercooler, Evilla Exhaust, Takeda S1 Intake
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I just washed my car and while cleaning under the hood I drained the catch can - Just over 1000 miles:

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Note: The orange look of the catch can threads is reflection of my red shirt I was wearing - not corrosion or moisture.
 
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