I figure I start to do my own oil changes - save a few bucks. Shouldn't be difficult. Got a manual, gives the instructions with some pics. Ready to go. Except when I look at the pic for removing the oil drain plug doesn't seems right. So, here my 1st newbie dumb maintenance question / observation. I see a plug (under) beside exhaust pipe - same side as filler plug. Am I safe to assume that's it. I know that there is a plug beside the filter housing but I understand that to be for the coolant. Sorry to consume anybody time but I don't want to start removing things before I know what they do.