[INF3RN0666]

hmmm that's weird... i was initially gonna say that it could be your throttle position sensor because my mom's car refuses to accelerate sometimes, and when you stomp on the pedal, it starts acting up. Then you mentioned the oil situation, and my opinion changed to something more serious. You have something mixing in with your oil, and that's a serious situation for the engine's life. Look at the exhaust coming out of the car, does it look normal (white, not too thick, smells like regular exhaust). Then check the level of your coolant. Did you notice a decrease in your fuel efficiency? Post all of that on the forum, and maybe some of the guys will have an idea of what COULD be wrong.

I'm no expert on exhaust gases, but maybe others on the forum can tell you the problem if your exhaust looks abnormal. The reason I asked about the coolant level is because your head gasket could be fried and you're leaking coolant into the oil. The fuel efficiency thing has to do with the fuel mixing with the oil, in your crankcase due to a busted Positive Crankcase Ventilation valve. A busted PCV valve would cause the buildup of sludge, and decrease performance.

Keep in mind, this is all just recommendations. I'm no expert, but I've had my fair share of issues. Just keep those things I mentioned in mind. If it turns out it's something else, please post it here so that I learn something, and hopefully you learned something too.