When Should You Change Engine Oil?
The oil change interval depends on oil type (mineral / semi / full synthetic), the model and driving style — check your owner manual for the exact number; do not rely on a generic figure.
What sets the interval?
Oil type, heat and city driving (frequent stop-and-go) shorten life, while steady highway driving extends it. Hard driving consumes oil faster.
Signs it is overdue
Very dark oil, a rougher engine note, a dropping oil level, or the oil light. Tracking the odometer since the last change is most accurate.
How Mowtar AI helps
It logs every oil change by odometer and date, learns your real interval from your history and similar cars, then reminds you before it is due.
FAQ
Does synthetic oil last longer?
Usually yes versus mineral oil, but the final number still depends on the model and the manufacturer manual.
Should I trust the dashboard oil-life %?
It is a good indicator on modern cars, but odometer + change history gives higher accuracy.