i have a 98 auto civic coupe ex and when i bought the car i had flushed the motor and i bought a new radiator and after awhile it was clean and i just checked it 2 days ago and it gots oil inside of it.. my car runs good no water in my engine oil or not overheating? any suggestions?

 

headgasket is gone if oil is mixing with antifreeze...pull up the valve cover and see what color is it...if it looks like coffee headgasket is gone.

 

its not in my radiator and its not overheating? i havnt had a chance to pull off the valve cover yet but i will but thats weird it doesnt overheat at all runs good i drive it about 200 miles a day..

 

but its in the resevor so that means either 1) you decided instead of adding oil to your engine you put it in the bucket ( sister did it before...) 2) oil mixing with antifreeze from blown head gasket/ crack in yo head. open the rad cap when the engines cool, and start it up, if the antifreeze shoots out, kiss lots of money good bye as there is a problem. also look for a rainbow ( oil stain in the antifreeze) when you undo the cap.