is it easy to change the oil on the IS 250/350? i am female, and not car savvy at all. i cannot change the oil on my infiniti because the place where you change the oil is poorly engineered, even my husband said so. he has to reach behind all this crap to get to it, and it's hard to get out the filter because there are car parts in the way. he has absolutely no problems changing the oil on his acura. naturally, when choosing a new car, i'd like to get something where it is easy enough to change the oil that i can do it myself (if i wanted to). can anyone give me a quick answer on this? thanks!!!