Engine oil keeps your engine clean, cool and protected. Here is how to know when it is time for a change.
Follow your owner manual
Your engine relies on a thin film of oil to keep hundreds of moving parts from grinding against each other. Over time that oil breaks down from heat, picks up dirt and metal particles, and loses its ability to protect. Changing it on schedule is one of the cheapest ways to keep your car running smoothly for years.
Synthetic oils resist breakdown far better than conventional oil, which is why many manufacturers now recommend longer intervals. Still, short trips, towing, dusty roads and extreme temperatures all count as severe driving and call for more frequent changes. When in doubt, check the oil on the dipstick: it should be amber and clear, not dark and gritty.
Signs you need a change
Watch for these warning signs between scheduled services:
Dark, gritty oil on the dipstick
Louder engine noise or knocking
Oil change or check engine light
Exhaust smoke or a burning smell
Your engine relies on a thin film of oil to keep hundreds of moving parts from grinding against each other. Over time that oil breaks down from heat, picks up dirt and metal particles, and loses its ability to protect. Changing it on schedule is one of the cheapest ways to keep your car running smoothly for years.
Tip: check your oil level once a month, with the engine off and the car on level ground.
Browse our engine oils to find the right grade for your vehicle.