Have you ever noticed that your vehicle has a schedule in your owner's manual for what is called “severe service” maintenance? Let's define what severe driving conditions aren't: The easiest driving a vehicle experiences is traveling on the interstate for 20 miles (32 kilometers) or more at a constant rate of 65 miles per hour (105 kilometers per hour) in 75°F (24°C) weather with only passengers on board. Change any one of those parameters and you are adding stress to your engine. Change them significantly and you are driving under severe conditions.Let's look at the parameters one a time. First, the length of the trip. Short trips around San Diego are harder on an engine than longer ones. As your engine cools down, water in the air condenses onto the engine. When you heat the engine again, the water evaporates off. This is healthy. But on short trips, the engine doesn't stay hot enough long enough for all of the water to evaporate. So it star ... read more

Would you buy a jacket without even trying it on? Probably not, but it might surprise you that one study shows about half the people buy a vehicle after a short test drive around the block or none at all.  If you're in the market for another vehicle, make sure you check out the most important things so you'll know if that's the right vehicle for you. Check out the gadgets.  Love a good sound system? Then turn it up loud.  Does it have enough bass for you? See how you like its navigation system if it has one.  Try pairing your Bluetooth smartphone with the vehicle.  Test out how to set the cruise control and how steady it keeps the speed. Back up and check out the rearview camera. If you buy this vehicle, you'll have to live with all of these things every time you drive. Test the vehicle on roads you know.  See how it handles bumps and potholes, how it takes that tight curve that you drive every day to and from work.  Driving on familiar roads gives yo ... read more

When it comes to your vehicle, it all starts with the battery. Proper battery maintenance is important for two reasons:First, your vehicle won't start or run without it. Second, it is the key to the long life of your auto electrical system. If your battery isn't working efficiently, your alternator has to work overtime to make up for it, and other electrical components can suffer as well.A number of years ago sealed batteries were introduced to the local San Diego, CA, market. They were hailed as being 'maintenance-free batteries.' While it is true that you can't get in and adjust the electrolyte levels of a sealed battery, it is by no means maintenance free.Batteries are very sensitive to changes in the weather around CA. Temperature really affects auto battery performance. A battery inspection is an important part of your spring and fall checkups. Next time you're under your hood, take a look at your battery. Is it clean and free of residue? A dirty battery will drain. Is there cor ... read more

Why are wheel bearings for San Diego vehicles important? It's simple: your wheel bearings keep the wheels on your vehicle. In today's John's Automotive Care post, we'll discuss more about wheel bearings and how you can make sure they can do their very job while you drive around San Diego, CA. Wheel bearings are pretty simple parts. They're made of high quality steel and are engineered to last 100,000 miles (160,000)  or more if properly cared for. The bearings do two jobs: First, they allow the wheel to freely rotate with as little friction as possible. Second, they support the weight of the vehicle. For example, if your car weighs 3,600 pounds (1600 kilogram), each wheel has to support approximately 900 pounds (400 kilograms). That's a lot of heavy lifting over those long distances.Even though wheel bearings are pretty straightforward, they need to be in near perfect condition to do their job for San Diego vehicles. The bearings are packed with heavy grease to lu ... read more

There are several important factors that go into how often San Diego drivers should replace their wiper blades. Of course, the more you use your wipers, the faster the blades will wear out – especially if you use them on an icy windshield. Whether it’s a lot of bugs and road grime from CA freeway driving or lots of wet weather – your blades get a work out and start to wear. But your wiper blades break down even when they aren’t used frequently. They are damaged by sunlight and temperature changes as well. The rubber in the blades can dry out and crack and eventually fall apart. Check your wipers: If they’re not doing their important job, have them replaced at John's Automotive Care in San Diego. Talk to your John's Automotive Care service advisor about how you drive - we can counsel you on the optimal blades for your needs.John's Automotive Care6267 Riverdale StSan Diego, CA 9212061 ... read more

There’s not much San Diego drivers can do about the price of gas in CA, but we can control - up to a point - how much we use. Our driving habits can dramatically affect our fuel economy.The first thing we can do is watch the go-pedal. Hard acceleration just sucks the gas. Gently leave stop lights and plan lane changes so you don’t need to floor it. That can save you hundreds of dollars a year in improved gas mileage.Go a little slower on CA expressways. San Diego drivers who go more than 65 miles an hour (105 kilometers per hour) will see their gas mileage drop dramatically. Leave early so you don’t need to rush to be on time. And cruise control is your friend – steady speeds use less gas.Plan errands ahead. Make fewer trips by combining errands around San Diego.Hey at current San Diego gas prices, a lead-foot might as well be a gold foot. Give us a call John's Automotive Care6267 Riverdale StSan Diego, CA 9212061 ... read more

When you start up your gasoline engine car, you may not know that it's using the same ignition principles as it has for decades.  You have spark plugs that require enough power so a spark can jump across a gap at its tip.  Years ago, a vehicle's 12-volt system had to produce 15,000-25,000 volts to do that, so engineers came up with something called an ignition coil that bumps up the voltage. It also has to be done at just the right interval called timing. The first systems had a distributor, a mechanical device with a rotating disc that switched the power to the ignition coil on and off.  That higher voltage then was sent to the spark plugs at the correct time interval. But the mechanical "points" had to be replaced and adjusted every 12,000 miles/20,000 kilometers.  Engineers later replaced the switching mechanism with solid state ones, but they still needed replacement after 120,000 miles/200,000 kilometers. The next evolution came in the 80's when the distributor ... read more

Even in the months where temperatures are cooler, heat is still an enemy of your vehicle.  When your engine runs, it creates heat, so there are numerous heat shields that protect other parts from those higher temperatures. Heat shields are installed around several areas of the exhaust system.  Others prevent heat from reaching parts of the vehicle.  Still others prevent heat from reaching the ground (or maybe grass underneath) and starting a fire.  If you remember your space travel history, you'll know how important a heat shield can be. John Glenn was the first American to orbit the earth, but during that maiden orbital flight, a sensor on board was indicating the heat shield on his capsule, Friendship 7, was loose.  If it had come off, his spacecraft could have burned up upon re-entry.  Fortunately, the heat shield stayed on, and Glenn made history. Unfortunately, the heat shields on your vehicle don't have warning systems like the space vehicles did.&nb ... read more

As the temperatures plunge, certain types of engine oil may not flow as easily as they did when it was warmer.  Makes sense, doesn't it? Just like molasses gets thicker as the temperature goes down, engine oil does the same thing. So, maybe you're wondering if you have to change your oil as the seasons change so it's just the right thickness to lubricate your engine parts.  How well engine oil flows is called its viscosity. There are different types of oil—some that have just one viscosity and others called "multigrade" oils.  Here's the difference. A single viscosity oil will flow better when it's hot but not as well when it's cold.  A multigrade oil is engineered so that its flow properties at cold temperatures are different than they are at warm temperatures.  In other words, a multigrade oil can start out in colder temperatures acting like a thinner oil and then behave like a thicker oil when it's warm.  That's a pretty cool trick and it's why mu ... read more

If you're gonna drive around the San Diego area, you've got to be able to see! So having a good set of windshield wipers is extremely important. We've all experienced the frustration and fear of not being able to see clearly during a storm or when our windshield is just dirty.It seems like your wiper blades are always at their worst when you need them the most. But windshield wipers are like most other vehicle parts– they require regular attention in order to work their best.You really ought to replace your wiper blades twice a year; in the spring and the fall. If it's going to be a particularly harsh winter in CA, you may even want to get special winter blades in the fall. Winter blades are designed to resist freezing.Speaking of winter and freezing conditions, if your car has been sitting for a long time and the windshield becomes frozen, don't use your wipers to clear off snow and ice. That'll ju ... read more