New oil old filter ? Nah OCI = filter too.
It's a once a year thing on my VW at around 6,000 miles and about 10 months on the Mazda at 6,000 also. I might consider the 10k oci hype on synthetic if I was driving 20,000 miles a year and set it to two LOF annually but I think of this kind of maint cost as way too minimal IMO to not play it safe. With such peace of mind, I don't bother with oil analytics / samples etc.... I verify the color of the oil and level a few times a year and let the dealer do their thing including stamping the service record booklet.
It's a once a year thing on my VW at around 6,000 miles and about 10 months on the Mazda at 6,000 also. I might consider the 10k oci hype on synthetic if I was driving 20,000 miles a year and set it to two LOF annually but I think of this kind of maint cost as way too minimal IMO to not play it safe. With such peace of mind, I don't bother with oil analytics / samples etc.... I verify the color of the oil and level a few times a year and let the dealer do their thing including stamping the service record booklet.