why is my car telling me to change oil after oil change reddit

If you make many short trips of 10 miles or less (in freezing temperatures).

If you make many short trips of five miles or less (in normal temperatures).

Intervals vary widely depending on whom you ask, whether you tow (and how often), the time of year, and even where you drive. There are often different recommendations for normal and severe driving. Once you're outside the maker's warranty, determining change intervals requires some common sense and an educated guess-unless your vehicle has an aforementioned oil-life monitor. If that's on while you're driving or idling, it means you're out of oil or have a very serious engine issue. This is much different from the red oil-pressure warning light that glows when you start the engine. In some systems, one of the instrument-cluster information screens will read out remaining oil life as a percentage. Service alerts are displayed in the instrument cluster. Keep in mind that the oil monitor is calibrated for the oil type recommended in the owner's manual. It uses that data to calculate the oil's condition and warranty-preserving change intervals. This gadget uses an algorithm, sensors, and software that keep track of drive temperatures, cold starts, driving hours, idling hours, and engine revs. Some newer vehicles have a built-in oil-life monitor.

Why is my car telling me to change oil after oil change reddit