First....I don’t have a computer that tells me my % of use/time left. Nor, do I rely upon the recommended mileage for oil changes. If I’ve been working the engine hard, heavy towing in hot weather...... I shorten my oil change mileage a bit. Though it’s still well beyond the recommended intervals. As I run synthetic, I generally change the filter at about the recommended “oil change interval” then change the oil and filter at around the time I would on my “3rd” oil/filter change! But.....that’s just me! ;) memtb