Tips & Advice

Have Questions About Your Vehicle?
Call us at (603) 623-9295 or email us your questions about your vehicle and our experts assist you.

How often should I rotate my tires?
Your tires should be rotated every other oil change, or every 6000 miles. Neglecting to rotate tires is a major cause of premature tire wear

Is it really necessary to replace my timing belt at the manufacturer recommended interval?
YES. The failure of a timing belt in many cars can result in major engine damage. The cost of repairing an engine with a broken timing belt is much greater than the cost of a timing belt replacement.

What does it mean if my “check engine” or “service engine soon” light comes on?
There are many sensors and computerized components that manage your vehicle’s engine performance and emissions. When one of these fails, the “check engine” light is illuminated. Although your car may seem to run fine, it is important to have the issue addressed to prevent long-term problems or failure of emission tests.

What should I do if my car starts to overheat?
This is a very serious problem – if your car overheats for too long, you can damage your engine. As soon as possible, find a safe place to pull off the road and shut the engine off! Do not attempt to check the fluid level in the radiator as it can burn you. The best thing to do is have your car towed to a repair shop.

When should I get my oil changed?
You should get your oil changed every 3000 miles or as recommended in your vehicle’s owner’s manual. If intervals are extended, ensure you use oil that is capable of extended mileage changes.

What is that milky brown engine oil?
Milky brown engine oil is an indication of coolant in the oil. This can be caused by a blown head gasket (other gasket), a failed transmission cooler, or cracked casings. This condition is very serious and needs to be checked by a professional technician quickly.

How to make sure my car battery has a good electrical connection?
Battery cables and terminals should also be cleaned and inspected to make sure they provide a good electrical connection.

What is synthetic motor oil?
Synthetic motor oils can be a good choice for high output, turbocharged or supercharged engines, vehicles that are used for towing (especially during hot weather), or vehicles that are operated in extremely cold or hot climates.
Synthetic motor oils, though several times more expensive than mineral-based motor oils, can improve fuel economy and provide longer intervals between changes. They also provide instant lubrication on start-ups.

Do I have to bring my vehicle back to the dealer for recommended maintenance?
No. You can have any manufacturer-recommended maintenance services performed by Bob & Sons Automotive. Only items that the dealer/manufacturer is PAYING for do you have to return there for (warranty, recalls). Save your receipts to provide proof in case there is a question later.

Why should I have my oil changes at Bob & Sons Automotive instead of the quick lube chains?
At Bob & Sons, we employ ASE-certified technicians who have MANY years of experience maintaining & repairing vehicles. We use high-quality oil and oil filters to keep your vehicle running stronger. Our keen eyes allow us to spot potential problems before they leave you stranded. And in most cases we can make the repair for you the same day, saving you the trouble of making another appointment.


321 Kelley Street
Manchester, NH 03102