The dealer can do an oil consumption test. This entails a dealer oil change ($150) then you drive for a set number of miles.

When you reach the mileage, they check how much oil was consumed. If it is out of spec then you have a problem.

I noticed a heavy sludgy buildup in my oil filler hole. When I had my HB replaced I asked that they perform the test. I’m really glad I did because I had a problem. The dealer rebuilt the engine under warranty, but charged me for a few optional parts that weren’t covered.

good luck