Engine oil OEM Honda or OEM Subaru

8k miles is just fine. I did that the entire time I've had multiple cars and they have gone a great distance:

I use my 09 Fit as a courier vehicle. I've driven over 80,000 miles in 14 months. If I did oil changes every 5k miles, I'd be under the car every 3 weeks.

I just follow the maintenance minder, which works out to 10k miles, give or take, but I've done that over all the 175,000 miles I've put on it in 10 years. I use Castrol GTX high mileage, but I'm sure it doesn't make much difference. I've seen a lot of stuff saying Walmart Supertech is probably just as good,if not better than name brand oils.

I do my own valve adjustments, and the inside of the engine is nice and clean...

I drive my car pretty hard, so 5k is preferred for me.

I change mine every 5K.

Worth the piece of mind to me considering it a turbo engine.

I do mine every 5k. It maybe adds one extra oil change a year for me, if that.

I've always put Honda GN4 in mine and whatever recommended weight stated in your manual :)

My '15 Forester will burn a quart of oil every 1000 miles if I run 0w20.

I switched to 5w30 and it's all good for 5000 miles

Well, some manufacturers do have way shorter oil change intervals than Euro manufacturers. The Subaru severe driving interval is 3000miles/6 months, and I do lots of short trips in a desert climate so I usually try to be around 3-4000 to stay on the safe side for warranty and whatnot.

The Fit is an awesome car. I have an 09 that has ~66k miles and NOTHING has gone wrong. Just the scheduled maint., oil changes (10-12k miles), and thats it.