Acura RLX 2017 Owner's Manual page 458

8. Pour the recommended engine oil into the engine.
u Engine oil change capacity (including filter):
4.5 US qt (4.3 L)
9. Reinstall the engine oil fill cap securely and start the engine.
10. Run the engine for a few minutes, and then check that there is no leak from the
drain bolt or oil filter.
11. Stop the engine, wait for three minutes, and then check the oil level on the
dipstick.
u If necessary, add more engine oil.
uuMaintenance Under the HooduChanging the Engine Oil and Oil Filter
457