2021 Supra Oil Seeping Around Oil Cap

[aorizun]

Just got home today from a spirited drive and now there's some oil around my oil cap. It's a 2021 3.0, around 32k miles. What could have happened?

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[J29DB03]

Overfill? When was the last change and how much was put in?

 

[FuzzyRev]

@razorlab Here we go!

 

[aorizun]

Overfill? When was the last change and how much was put in?

Last change was at 27500. I wasn't the one to fill it. I have Liquimoly 5w30 on the way and was planning to change that at 32500. It hasn't been burning or seeping before today. Oil level still says good.

 

[Teleguy11]

Hmmmm....??? Cap tight?

 

[KBG]

I've had this issue for the longest time and even replaced the oil cap.

 

[concept]

Just got home today from a spirited drive and now there's some oil around my oil cap. It's a 2021 3.0, around 32k miles. What could have happened?

Based upon what I have read in the past, sometimes, spirited driving can cause higher than normal engine pressures, which can force oil past seals and gaskets.
If the oil leak is minor and there are no other symptoms (like engine noise, smoke, or a drop in oil pressure), it might not be a serious issue.

 

[aorizun]

Hmmmm....??? Cap tight?

Caps tight, or atleast locked to that 90 degrees and can’t go further.

 

[aorizun]

Based upon what I have read in the past, sometimes, spirited driving can cause higher than normal engine pressures, which can force oil past seals and gaskets.
If the oil leak is minor and there are no other symptoms (like engine noise, smoke, or a drop in oil pressure), it might not be a serious issue.

Oil leak was pretty minor. No engine noise or anything like that. It pulled strong and data logs were good. I cleaned it off and have been driving around and no leak so far but I haven’t been pushing it.

 

[aorizun]

I've had this issue for the longest time and even replaced the oil cap.

Did replacing the oil cap fix it?

 

[concept]

Oil leak was pretty minor. No engine noise or anything like that. It pulled strong and data logs were good. I cleaned it off and have been driving around and no leak so far but I haven’t been pushing it.

That is in some ways similar to my diff leak. I am monitoring it as an occasional small drop on the garage floor.

 

[KBG]

Did replacing the oil cap fix it?

Nope. From googling the symptom, it doesn't look to be uncommon though.

 

[TurboZX10R]

I have the same seep from stock cap and klm cap (to catch can) don’t know the cause or what’s going on but you’ll be fine. Ps I don’t have pcv system pinned or Visconti cover if it makes a difference or not idk.

 

[aorizun]

I have the same seep from stock cap and klm cap (to catch can) don’t know the cause or what’s going on but you’ll be fine. Ps I don’t have pcv system pinned or Visconti cover if it makes a difference or not idk.

I'm sort of wondering if it has to do with the pcv system. When I installed my armaspeed air intake I broke off the that crankcase breather hose and I got a new one to replace it and I felt like I put it on right. Hoping that I didn't break it or something.

 

[Axix23]

Blown engine head. Oil
Shooting up…

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