Auto Alliance

101 East Main St, Unit 5

Merrimac, MA 01860

Frequently asked questions:

Find the answers to all of your common automotive care questions right here. Have more questions? Stop in or call Auto Alliance today and we’ll be happy to answer!

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To avoid premature tire wear, rotate tires every 6,000 miles or with every other oil change.

How often should I rotate my tires?

It means that your vehicle's computer has detected a failure or vehicle running at nonoptimal level. Always bring your vehicle in for diagnosis when the check engine light comes on, even if the car is running fine. As vehicles become more computerized, the failure of a sensor or component can illuminate the warning light.

What does it mean if my check engine light comes on?


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All technicians at Auto Alliance are ASE certified.


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Is it important to replace my timing belt at the recommended intervals?

Yes! Recommended intervals are based on how long the average timing belt will last before breaking. A broken timing belt may result in major engine damage and much higher repair costs.

What should I do if my car overheats?

Never continue to drive when your car overheats as it can seriously damage the engine. As soon as you notice a problem, pull over and shut off the vehicle. Never attempt to open the radiator! Extremely hot coolant can spray out and cause serious burns. Call a tow truck to have your car brought to a repair shop for diagnosis and repair.

How often should I get an oil change?

Your vehicle owner's manual will recommend the proper intervals to change the oil. Many vehicles do well with an oil change every 3,000 miles.

Why is my engine oil milky brown?

If you notice your engine oil is a milky brown color or greyish, bring it to a technician immediately. This is a sign of foreign liquid in the oil. This is a serious problem.

How can I be sure my car battery has a good connection?

Have your battery cables and terminals inspected during other maintenance visits, such as oil changes. Over time, a buildup can cause bad connections and the terminals will need cleaning.

Should I use synthetic motor oil?

If you have a high output, turbocharged or supercharged engine synthetic oil is a good choice. It’s also great for vehicles in extreme temperatures or vehicles under extreme conditions. Synthetic oil provides instant lubrication upon start-up also creates less carbon deposits. It may also last longer between changes than mineral-based oil, synthetic motor oil breaks down slower than conventional motor oil.

How often should I replace my car's fuel filter?

Check your vehicle owner's manual for recommended intervals or replace it about every 30,000 miles to ensure good performance.

How often should I change my spark plugs?

Regular spark plugs should be replaced every 30 months or 30,000 miles. Some vehicles use 100,000-mile, platinum-tipped spark plugs. Ask your mechanic if you're unsure what your vehicle uses. Spark plugs help with fuel economy and engine performance.

A fuse burned out. What should I do?

Fuses burn out for all kinds of reasons, make sure you replace the old fuse with one of the same amperage, which is printed right on the top of the fuse. If the fuse continues to burn out, bring your vehicle in for a circuit check by a professional technician.