Not trying to be mean, but people probably are too dumb to know when to change the oil, because they can’t know the actual condition of the oil. My Honda Ridgeline has a maintenance minder that takes into account the operational factors of the engine and vehicle. Honda spent some effort in developing it. Basing the oil change on the engine’s actual operation makes a more sense and is more accurate than following a flat mileage interval. I’d guess a short 5K mileage based interval wastes a lot of time and oil, compared to what is really needed. Typical oil change interval on our three vehicles ranges from 8,500 to 10,000 miles, following their minders. Change the oil when the vehicle calls for it . . . very simple.My Lincoln Navigator has that annoying oil change reminder too like I am too dumb to know when to change it. To keep it simple I change all my oils a 5k miles and go by the miles on the speedo. 130k, 135, 140, 145 etc............very simple.
According to Honda:
The Maintenance Minder System uses the on-board computer to continuously monitor engine operating conditions such as speed, engine temperature, ambient temperature, time, and vehicle use to determine when an oil change and regular maintenance is necessary.
Here is the summary from Honda’s R&D paper on the subject:
SummaryAn oil deterioration monitoring system has been developed to enable the necessary intervals between oil changes to be judged with greater accuracy. The system calculates oil life using an oil deterioration algorithm. When the figure reaches a predetermined value, the meter displays a recommendation for oil change. The algorithm first estimates oil temperature, a parameter of the oil deterioration coefficient. The coefficient and engine speed are then used to calculate how much of the oil’s usable life has been expended. The oil deterioration coefficient, which is dependent on oil temperature, was found from oil life in endurance tests conducted with oil at differing average temperatures. A market survey was conducted to verify the applicability of the measure to a variety of driving modes, and results were reflected in calculations of oil life. It has been demonstrated that this system is successful in enabling U.S. users to change their oil at more appropriate intervals.