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Question DetailsAsked on 7/17/2012

Standard advice- change car oil every 3K miles. Car manual says change every 15K miles. Wouldn't the manufacturer know what's needed?

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1 Answer


If your car is under warranty - definitely ask the manufacturer what they recommend for your driving conditions to ensure you meet warranty criteria; it really depends on if your car is driven under normal or severe or extreme conditions; the definition of normal vs severe and synthetic vs conventional really defines the intervals for oil changes; for example a car driven in the desert with windy, dusty conditions, you will need to change your oil and filters more often. The manufacturers recommendation in writing for your driving conditions will help you later if something happens to your engine and you need warranty repair. If you can't get it in writing, write down the name, date and # of the person who gave you the info. The manufacturer recommendation is the final say when it comes to authorizing a warranty repair on your vehicle; they are also the final say due to their research and development on your vehicle - they do recommend a certain oil, filter, antifreeze, etc and replacement intervals for the best performance and engine life. Some cars use full synthetic oil and won't need as frequent oil changes; some use a blend and or conventional oil and will need to be changed more often. Lots of questions, but the manufacturer knows your car better than anyone.

Answered 8 years ago by meadauto

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