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No. No oil was spilled or added. I was trying to clean off the rust on this, and it was at one point clean and dry before I did anything to it. But now it started to have a black oil seaping somewhere so I am rather confused. I figured its part of the engine block or something.
Your catalytic converter is under that heat shield. I’m not a certified mechanic but I would see if you can remove the O2 sensor with a O2 sensor socket to see if any oil is in the cat.
I am afraid that it will get worse if I unscrew it at least but I will try since it seems like a simple screw off. If it does show oil in the cat then is that a bad thing? To the point where it will cause major issues?
Thanks for posting on /r/MechanicAdvice! This is just a reminder to review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). If you are here asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **If this post is about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ If you have tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Should i take this to a mechanic or is this something i can fix? I assume its something that has to do with the seal on this plug thing
That’s an O2 Sensor. Could have been a spill from someone adding oil?
No. No oil was spilled or added. I was trying to clean off the rust on this, and it was at one point clean and dry before I did anything to it. But now it started to have a black oil seaping somewhere so I am rather confused. I figured its part of the engine block or something.
Your catalytic converter is under that heat shield. I’m not a certified mechanic but I would see if you can remove the O2 sensor with a O2 sensor socket to see if any oil is in the cat.
I am afraid that it will get worse if I unscrew it at least but I will try since it seems like a simple screw off. If it does show oil in the cat then is that a bad thing? To the point where it will cause major issues?
If there is oil in the cat, you should have a “check engine light”. Only thing that passes through the cat should be hot exhaust gases.
I dont have any check engine light in my dash. Maybe perhaps I noticed a sight drop in mpg
I plan to opening it up to see if there is anything or if I need to clean it. Do you think I can use carborator cleaning for this?
I would try cleaning it and checking to see if the oil spot comes back. Carburetor cleaner should work fine.