I have owned my car almost 7 years. I've never before checked the oil level with readings like all three of the first holes not having oil in them but the 4th one at the top does. Or at times none of the holes are covered with oil but oil is around the holes on the front and the back of the dipstick. It varies around, even the first and third holes sometimes have oil in them.
I am concerned that someone has put something wrong in my engine to ruin it. Yesterday it was clear and today I drove very little. Now it has a brown color to it and smells burnt. Plus it's overfilled by about a quart.
I have to drive it 100 miles early in the morning then having it changed if it makes it that long...really worried my engine is being ruined. I've always changed the oil when it was due to be. Should I be so concerned? Help/Answers are appreciated.