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31

What Happened to My Fuel Economy?

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You notice that suddenly your vehicle seems to be getting worse gas mileage than it did awhile back. Why? What happened? Like with most things on your vehicle, there can be numerous problems at the root of poor fuel economy. Let’s start with the simple ones and work our way to the more complicated issues: Tires: This one’s easy. Underinflated tires mean more rolling resistance (think about riding a bike with a low tire), and more rolling resistance means poorer fuel economy. Check your tire ...
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31

How To Maintain A New Car

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So you got a new set of wheels – congratulations! You’re going to want to hang onto it as long as possible, so you’ll want to keep it maintained as well as you can. Here are some suggestions: First, read the owner’s manual carefully and stick to manufacturer’s recommendations for service intervals. There are certain things that are critical enough that failure to adhere to recommendations can void a new car warranty. Don’t let that happen! For instance, just about every manufacturer recom...
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31

Spark Plugs – How Often Should They Be Replaced?

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In the old days, a tune-up was necessary about every 35,000 miles. It would usually consist of setting the ignition timing, replacing the mechanical breaker points in the ignition, cleaning and adjusting the carburetor and replacing the plug wires and spark plugs. Today, of course, the carburetor’s job is done by fuel injection and the ignition timing and spark are controlled by the engine computer. Few vehicles still have plug wires anymore either, as the distributor was replaced by the compu...
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12

Uh Oh…My Check Engine Light Is On

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So you come out to start your car one morning and the Check Engine light on the dashboard comes on…and doesn’t go back off again. You can’t really notice any difference in the way the car runs and drives, but it’s on anyway. What does it mean? Since the late 80s, most engine functions have been controlled by a central drivetrain computer. This includes emissions controls, fuel metering and delivery, ignition timing, shift points and many other elements of drivability and performance. The dr...
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12

Get Your Car Really, Really, REALLY Clean!

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It can be a lot of work and attention to detail to get your car really clean…especially if it’s pretty dirty to start with…but here are some ideas for truly thorough cleaning that you may not have thought of! --A cheap foam paintbrush can get into crevices (like A/C vents) that might be impossible otherwise. As you loosen up dust from these spots, keep a vacuum cleaner nozzle at work in your other hand to suck up the dust and prevent it from settling other places. --A soft-bristled brush is ...
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12

Are You Ready For A Roadside Emergency?

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Yeah, yeah…your vehicle’s fairly new and you take care of it, and you’ve even got a membership in AAA. That doesn’t mean that your chances of ending up in a tight spot are zero. It’s just common sense to be prepared with a trouble bag in your car. Here’s a pretty good rundown of things you should keep in a car emergency kit: Fully charged cell phone: You may want to consider a cheap prepaid “burner phone” with a long battery life and keep it strictly in the car. If nothing else, at leas...
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20

So You Think Some Traffic Laws Are Nuts?

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Yes, there are plenty of traffic laws in certain areas that don’t make much sense. Here, though, we present a collection of traffic laws from other parts of the world that are just bizarre: --In Thailand, the law states that no driver, male or female, shall ever drive without a shirt. --In South Africa, “the driver of a vehicle on a public road shall stop such vehicle at the request or on the signal of a person leading or driving any bovine animal, horse, ass, mule, sheep, goat, pig, or ostri...
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19

Your Car’s an Investment – Protect It

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You rely on your car every day, and you have a lot of money tied up in it. It’s probably one of the more valuable things you own…so make sure you get the most out of that investment: Oil changes: Changing your motor oil at regular intervals will ensure long engine life by cutting wear and friction and helping to prevent the buildup of sludge and carbon on internal engine assemblies. Cooling system: Older cast-iron engines could overheat with no serious consequences, but not so with today’s a...
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19

Make Sure Your Car's Ready For Winter!

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You know that winter and bad weather are coming. Is your car ready? Here’s a quick checklist of things to get up to speed on: Motor oil: Motor oil has a tendency to thicken in cold weather, making it harder to circulate to upper engine parts at startup. If you haven’t ever used synthetic oil before, this might be a good time to start. The flow properties of synthetic oil are a lot more consistent, meaning it doesn’t thicken in sub-freezing temperatures or thin out when it’s hot outside. Wip...
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25

Things To Look For When Buying a Used Car

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Buying a used car is somewhat less of a crapshoot than it was at one time. You can get detailed information on a vehicle's history via the CARFAX report, and a technician can use onboard diagnostics to get a good picture of what's going on under the hood and what problems might be coming up.    It's always a good idea to get a mechanic to look over any prospective purchase, but there are things you can get a look at yourself before you spend the money for a professional inspection. These are th...
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Serving the Braintree, MA and Boston, MA area, Sonny Johnson Tire is the premier dealer of Bridgestone and Firestone tires. Providing auto repair and tires for all makes and models, Sonny Johnson Tire takes pride in knowing our customers can have confidence in not only a quality repair, but a speedy and honest completion.