OIL on Dipstick?

[1G90AWDTsi]

I drove my car for about 15 minutes to the gas station (no romping at all). Then I drove it back to my place (15 minutes) and only got on the turbo once. When I got home, I let the car idle for about 3 minutes then turned the engine off, waited for about a minute then checked the oil. The oil was pretty thin (so it felt) (castrol GTX 10w 40), changed 75 miles ago, smelled like fuel, and was piping hot but my temp-gauge was normal and my oil pressure was a little above 1/2 way. How hot does the oil get? And is the fuel smell normal? I haven't noticed a gain on the dipstick level when checked 1st thing in the morning.

 

[bling5tatus]

Fuel in your oil could be the piston rings... because the air/fuel mix is getting by the rings into the oil... I'd check the compression. Does the car feel like the compression is good when you're driving?

 

[oldman]

How is your crankcase vented? This is something I posted in the past.

For a PCV system (both PCV vavle and breather) to work effectively in ventilating the crankcase, they must work together as a team. While the system is under boost, PCV closes and ventilation is done through breather via vacuum in the intake pipe. While the system is under vacuum, PCV opens to relief pressure but more importantly, to remove blowby/contaminates from the crankcase then replace with fresh/metered air pulled in through the breather, this is the second part of crankcase ventilation that most seems to ignore, most only focuses on pressure relief.

Possible problems with other options:

1. Keeping PCV intact while venting the breather: Most running this setup will experience excessive crankcase pressure when under boost due to lack of vacuum coming from the intake pipe which can lead to dipstick pop out, leaky valve seals, tubo seal and gaskets. Less importantly, your AFR will go slightly leaner due to unmetered air.

2. Venting both PCV and brether: Pressure relief is not as big of an issue (provided that pcv is replace by a straight fitting) but because vacuum is completely removed, there are no ventilation and most blowby and contamintes will end up in your oil system. Less importantly your AFR will go slightly richer due to disabling the pcv vavle. Not a big problem for a track only cars but a DD is a different story.

You can easily maintain the integrity of your pcv system while keeping your intake tract clean as well as addressing the known leaky OEM PCV.

PCV side : IM -> heavy duty check valve -> inline/sealed catch can -> PCV valve -> VC

Breather side : VC -> 2nd inline/sealed catch can -> intake pipe.

 

[1G90AWDTsi]

Fuel in your oil could be the piston rings... because the air/fuel mix is getting by the rings into the oil... I'd check the compression. Does the car feel like the compression is good when you're driving?

Yea, it has very solid power and operates smoothly. The block only has 1200 miles on it.

 

[1G90AWDTsi]

How is your crankcase vented? This is something I posted in the past.

very interesting. My dipstick used to pop out and then i replaced the pcv and it hasn't popped out since. As far as catch cans, I have none but have wondered about that. Thanks for the advice.

 

[oldman]

Is your breather still connected to the intake pipe?

BTW It's normal for a new engine to have more blowby since the rings have not fully seated yet.

 

[95tsiawd6blt]

my oil smells like fuel as well, but i thinks its because it is running veryyy rich, does this make sense??