[Mark]

I only use synthetic but change my oil around the 4000 to 5000 area. My thinking is oil might last longer but it still picks up the same amount of foreign particles in the oil.

[Mark]

I only use synthetic but change my oil around the 4000 to 5000 area. My thinking is oil might last longer but it still picks up the same amount of foreign particles in the oil.

[Author]

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