I've suddenly realized it's been about a year since my last oil change.
Don't panic now, for almost three months of that time, my truck was sitting on a ship, visiting parts of the world I'll never see.
The rest of the time it's done well less than 5,000 miles.
Problem is, due to circumstances beyond my control (including a probably lack of compatible oil filters), oil won't get changed 'till end of March. Probably have less than 100 more miles - we don't drive much, or far.
So, am I damaging my engine with old oil? Or is the # of miles more important?
jmc