The car -- I assume Saturn Outlook and not Microsoft -- is about nine years old. How many miles on the odometer?
You'll have to decide -- if there's prospect of an expensive "repair" -- whether it's worth it to you. With some cars showing 150K on the odometer, I might be inclined to spend the money. With others, not so much after nine years.
Five years ago, I was discussing the possibility and expense of an engine overhaul with my mechanic. About three years before that, an overdue timing belt broke, and we worried about just the possibility of a blown headgasket and the usual engine damage risk when a timing belt breaks.
Apparently not any such thing, and the prospects are good at 186K that 300K is possible without overhaul -- maybe beyond. But I was thinking I would shoulder the $3K or $4K expense of an engine rebuild.
If another three years elapse and the overhaul prospect looms as a certain option, I'll just buy a new car to replace what will then be 27 years old.