The concept makes a lot of sense, taking into account highway driving, running the AC, cold starts, idling, and short trips.
Applying it to our 2007 Dodge Grand Caravan 3.3:
Worst case - City driving in extreme cold:
Typical fuel consumption = 20 l/100 km
The engine requires 4.7 l of oil for an oil and filter change.
4.7 l x 200 = 940 l (Sump capacity x 200)
How many km does the van travel to consume 940 l of fuel? 940 l/20 l/100 km = 47 x 100 km = 4700 km
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Best case - Highway driving spring or fall (no AC use):
Estimated fuel consumption = 9.4 l/100 km (This is an estimate - likely close, and chosen to make the math easy.)
4.7 l x 200 = 940 l (Sump capacity x 200)
How many km does the van travel to consume 940 l of fuel? 940 l/9.4 l/100 km = 100 x 100 km = 10,000 km
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And in between?
City/suburban driving in not-extreme conditions would probably result in an OC being required somewhere between 6000 - 8000 km.
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In practice, this won't likely change what I've been doing for years - a pre-winter oil change c. October or November, a spring change c. April, and perhaps a mid-summer change if the mileage warrants it.