Had my oil changed yesterday. I told the guy doing it to put in 5 1/2 qts and check the level. So he does,....starts it, shuts it down and a minute later shows me the oil level. Its exactly half way on the cross hatching, so I tell him to dump the rest in and button it up. I check the level this morning, and now its past the second dot, to the end of the X on MAX. What happened? It couldnt be more than a 1/4-1/3 qt too high, do I need to worry about this?