The additional oil is probably negligible. I'd go with the larger for the sole reasone that it would likely have a larger filter element, meaning it would theoretically last longer before triggering the bypass function. This may not matter if you replace at short intervals, but would give you piece of mind if you plan on running an extended drain interval.
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2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z
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