okay gang, not sure how much the R18 engine in my 2012 civic HF differs form the K24W1 in the accord sport, but...
when i brought in my civic for an oil change (which directly lead to the purchase/trade up to the accord) the maintenance guy asked if i was at 15% or less. i said honestly i didnt check, but the car has about 5k on it, and i bought it 7 months ago. isnt it about due? he said no. it does have break-in additives and changing it too soon would harm the proccess.
he told me to get on it harder!
but... but i already do!
its moot now since the civic is gone (yes, before its first oil change!) but i will keep this in mind for the accord.
also on the point of break-in, i was told by a tech on the civic forums its fine to nail it, just let it rev down as much as possible in gear. this helps evenly bore the rings/walls together for a good seal.
like say you stomp on it to third. let off but leave it in third and let the revs come down in gear.
its tricky for an auto, but in the sport, its easy in "sport" mode. same with manual, obviously.
just a tip since we are discussing oil with additives for break-in.