Thread: Oil change
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Old 05-24-2023, 01:18 PM   #4
mvweebles
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I change my oil at least annually just because it's a prevailing recommendation, and it's cheap and easy to do.

However, I have seen nothing to suggest that oil goes bad with age. There are no expiration dates on oil, but I suppose the additives could settle out if they are in suspension. But even then, they would mix quickly. It's been a while since I've had an oil analysis done but I don't think they adjust for pure age of oil vs engine hours.

Would be interesting to see an oil analysis on 100 engine hours at 6-mos vs 3-years.

Peter
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