Engine oil OEM Honda or OEM Audi

It'll be fine, my only argument against it is that you're probably paying too much for that quart. I've always used the Honda GN4 motor oil, buy a gallon for ~$30 when it's time for an oil change and have a little left to spare. Any dealership should carry this, Yamalube is also basically the same thing.

I would do 10k intervals in my Honda Fit but a majority of my driving in that car was highway. I'd also need to add a quart after 7000 miles because of consumption.

First gen Honda Insight, takes 2.6 quarts

23 hybrid accord, the dealership recommended 15k miles

6k is ideal.. so yeah 5k-6k. My 23 civic maintenance light came up between 5k-6k and i had like 15 % left on it

I got my 93 Accord up to 333,000 miles changing oil at 7500 miles, using the cheap synthetic blend Walmart crap, and engine failure isn't what killed the car. When I pulled the head at 250,000 miles to do a head gasket, the cylinders still had the cross hatching from the factory hone so I'm gonna say 7500 miles was plenty often enough. Changing oil more often than required is nothing but wasting money and buys you nothing in terms of reliability or longevity.

2013 Accord V6... I change it every 7500 with full synthetic. Anyone changing before 5k is wasting their money.

Before I boosted mine, I would do 5K all the time. Now it's close to 4k, anything over that and feels like shit driving it.

I had the same issue on my 2019 A6 3.0 last year. Two times I had to pop into the dealership to have oil removed (no charge) and the issue was due to dilution and short trips.

We had a guy trade in a 10th gen Honda Civic with the L15BE (known for head gasket failure mostly) that he filled with thicker oil. Started knocking like crazy when we changed the oil for the sale.