Oil on my o2 sensor

[I Need Speed]

Here is the problem. I have been a quart of oil low for a couple of oil changes that I have noticed. I figured that my car was just burning oil. But I just installed a Greddy SP2 exhaust a couple of months ago, and when I took out the o2 sensor from the stock exhaust, there was oil all over it. Can someone tell me what would cause oil to get onto my o2 sensor?

[mrmozambique13]

It could be your valve seals or a cracked guide. Do a compression test.

[I Need Speed]

Thanks Mrmo! What kind of equipment do I need to do a compression test? Or should I take it to a shop? Any other advice will be appreciated!

[VelocitàPaola]

Take a look here:

DIY: Compression Test for the 420a

[I Need Speed]

Originally Posted by VelocitàPaola

Take a look here:

DIY: Compression Test for the 420a

Thanks for the link. I'll see if I can find the tools and try it out.