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You have the option to go with conventional or synthetic oil. Is one better than the other? Synthetic oil offers additional chemicals in its mixture. Their purpose involves improving lubrication and protection performance. Other factors contribute to synthetic oil's value.

When it comes to motor oils, viscosity refers to the ability of the oil to flow in certain conditions. When a motor is running, heat is a major factor in how oil covers and lubricates an engine. This is why it is important to use oil with adequate viscosity. Not enough viscosity will cause a car’s engine parts to have undue wear and damage.

For the longest time, people took their cars in for oil changes every 3,000 miles. However, nowadays, this generally is not necessary. Here at Diablo Subaru of Walnut Creek, we know that some cars only need oil changes every 10,000 miles. Even the cars that need the most frequent oil changes typically only need an oil change every 5,000 miles or so.

You could be wondering how you can tell when your oil should be changed. There are actually a few ways to tell this. If you check your vehicle's manual, this information should be listed…