Here's a question that nags me.
My car sits for 4 or 5 months in a garage that gets down to ~40-50 degrees
1) Should I change the oil before in the fall, after I've finished driving for the winter (what I do now)
2) Change it in the spring, just before I start driving it
3) Drain the oil in the fall, and fill it with fresh in the spring? (occasionally I need to run it over the winter)
I'm sure there are purest that say change it every 3 months whether it needs it or not.