Okay gear heads here we go. I own a 2007 Nissan versa, currently 123,xxx on the meter. I should have done an oil change 6,000 miles ago, but with my schedual and laziness I haven't got it done. My question to you guys is what type of oil should I put in it, I'm bringing it to a shop not doing it myself, so I have documentation of it being done "professionally". My dad swears by full synthetic, however this is not a high performance vehicle so is it really necessary? I usually would put in something high milage, like castrol or Valvoline but I really want to make this car last longer than my last one. I also am looking into getting the tranny filter/fluids changed, and need input on what to use there also? The tranny slips every once and a while and I know its because the fluids and filter have been changed in a while....past 6k miles. So really any input on what would be best for my little fuel efficient care would be great. Thanks!

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