I was strolling through Target the other day, looking for some of that $1.22/qt Mobil 1 15w50. I noticed on one of the oil shelves a little list of tips. One was to change oil every 3000 miles, etc… The one that caught my eye stated to use HEAVIER weight oil in the winter!!! I read & re-read the thing to make sure I wasn’t mis-reading. Is Target giving misleading/incorrect advice? I would think their lawyers would want that thing to say “Use an oil recommended in your owner’s manual”.