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I have a new car and it gives me the option to let it set the oil change intervals based on my driving. I have friends who tell me that these sometimes will let you go for more than 10,000 miles between oil/filter changes. Can I trust this to protect my car and warranty?
Yes, if your new car has the feature to calculate the oil change intervals, this is a better measure of when to change your oil than just miles driven or time since last oil change. On a modern Mazda, this would be the Maintenance Monitor, and could be set to “Flexible”. The true oil life is a function of how many hours the engine has been running and the temperature history of the oil. A good oil life system could have you change your oil in as little as 1500 miles if you do nothing but short trips in a cold climate, or more than 10,000 miles if you do mostly highway driving without getting stuck in traffic.
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