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What kind of engine oil should be used for a Mazda 6 over 10 years old?

3 Answers
SanOlivia
09/04/25 3:16am
For a Mazda 6 over 10 years old, Castrol 0-20 Edge engine oil can be used. The functions and composition of engine oil are as follows: Functions of engine oil: Engine oil, also known as engine lubricant (English name: Engine-oil), serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. It is often referred to as the "blood" of a car. Composition of engine oil: Engine oil consists of base oil and additives. The base oil is the main component of lubricating oil, determining its basic properties, while additives compensate for and improve the shortcomings of the base oil, imparting new characteristics. Additives are an essential part of lubricating oil.
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VonHenry
09/16/25 4:26am
My Mazda6 is over ten years old, and I've always used full synthetic oil with a viscosity of 5W-30 because the engine has significant wear due to its age and needs good oil for protection. I use brands like Mobil 1 or Shell Helix, which offer strong lubrication performance, preventing carbon buildup and oil leaks. Regular oil changes are crucial—I change it every 5,000 kilometers while also checking the dipstick to ensure the level isn't low. By the way, if the car is used for long-distance driving frequently, high-mileage oil with anti-aging additives can be considered, but 5W-30 is sufficient for most situations. Don't skimp by using mineral oil, as it can shorten the engine's lifespan. After all, maintaining an older car requires extra care to ensure it runs long and remains fuel-efficient.
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PhoebeMarie
10/30/25 5:01am
As an average car owner who has driven a Mazda6 for over ten years, I consulted my mechanic friend and started using full synthetic 5W-30 oil. Choosing reputable brands like Castrol Edge ensures reliable quality and reduces engine noise. Older cars have higher lubrication demands, and this viscosity works well in both cold and hot weather. I add a high-mileage formula with each oil change, which noticeably prevents oil leaks. Keeping detailed maintenance records and servicing every six months is the safest approach. When it comes to saving money, don't skimp on oil—spending a bit more on quality oil brings long-term peace of mind and helps avoid breakdown hassles.
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