We had a 2005 Acura RL in with a warning on the dashboard indicating low oil.
The oil level was checked and found to be at proper level. We decided to change the oil first before beginning tear down to check the condition of the oil and check for any possible sludge buildup. The oil looked good. Manually checked oil pressure and it was intermittently testing low. The oil pump was not pumping sufficient amount of oil to the top end of the engine and needed to be replaced. Quite a timely process, but needed to be done before any damage is done to the engine. It was good we got to the problem now as after replacement of the oil pump, the warning is gone, the engine is running like a champ and the customer does not need to replace the motor!