Vehicle in question is a 1985 Volvo 245 non turbo, about 217K miles on it. Mobil 1 10W-30 in it with a Mann filter. No leaks or consumption issues; it's just that this vehicle doesn't get driven much. Oil was last changed in January, 2002 (yes, that's about eighteen months ago), and the car has gone maybe 1,500 miles in that time, almost all of it short trips to and from my son's school (8 miles each way). Time to change it? Anyone want to see a UOA? (silly question) Thanks for any input.