Ok, for the important info. 2017 Nissan Frontier with 4.0 v/6. Bought in 2019 with 17k on it, now has around 25k . Will change oil this spring after weather warms up some. ( FYI, this will NOT be the first time changing LOL). I have been using Full synthetic 5w30 and Fram Ultra filter, and will use same again. I will probably put around 5k miles on in the next 12 months, with about 1/2 of the miles being long drives spaced out throughout the year. Question is, should I go the full year, or should I change it to fresh oil in the fall so have clean oil for winter. Seems like a waste of synthetic oil to change so soon, right? Oh, by the way Summer or winter it is always garaged in a garage that doesn't get above 90 in the summer or below 40 in the winter, if that makes a difference in recommendations.