I run 10K per change on my metros with a ph3600 filter (typically found on ford 3.0 V6) Its the largest filter that fits with A/C on the engine. It increases the oil capacity by 1/2 qt. which makes me feel better knowing that there's an extra 1/2 qt in there if it ever gets low
More dilution for the filth from the engine plus larger surface area and capacity. Its all good