Why is there an oil leak in my muffler?

I have never seen engine oil come out the muffler are you sure its engine oil?That would be really hard to have raw oil come out the muffler. Also what codes do you have?

Okay, don't panic. First, if there is oil in the exhaust, you would be getting blue smoke from the exhaust system when you have the engine running. Is that happening? Next, it is very common for a black sootie water to come out of the exhaust when it is started after sitting. Condensation developes in the system and then when you start it, water comes out. That mixed with carbon in the exhaust turns it black. The original oil level concers me, but someone may have left it get low. Keep an eye on it. Finally, if the check engine light is on, that means there is a trouble code stored in the computer. You need a scanner to reteive it. Since you don't have your lincense, you can't drive it to a parts store where they will scan it for free. So you need to call around the parts stores to see if they will lend you one. It plugs in inside the car and communicates with the car's computer. From that, you will get a trouble code that will identify why the light is on and where the problem is coming from.

I hope this helps you. Let me know if you have other questions.

Very well put jacobandnickolas it could be burning oil also those engines have been known to burn oil especailly if the oil wasnt change regulary. Get the codes and we will go from there.