Is an engine flush and clean necessary on a three year old, low mileage car?

Is an engine flush and clean necessary on a three year old, low mileage car?
If the oil has been changed every year and drained hot from the sump plug I don't think so. If it hasn't been changed every year or has been siphoned out, then needs a flush and a drain from the sump plug.
Answered by Honest John on

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