I changed my oil or thought I did on my c230 but I drained the oil from underneath the car and it seems that was for something other than the regular oil, it might have been the transmission fulid that I drained not the oil then I proceeded to pour in oil into the part that has the oil cap with the oil jug image on it. Started my car and it is now smoking. I think I poured in new oil while I still have the old oil. How can I drained the old oil and then put in the new oil. I also now have to put in transmission oil, where do I put in the transmission oil. Help
Ikpa