Have you ever seen a ballet performance? Have you wondered how all of those dancers manage to travel all over the stage jumping and twirling and never crash into each other? That's the job of a choreographer.Our auto engines are also highly choreographed. Pistons travel up and down inside cylinders. Valves at the tops of the cylinders open to let air and fuel in or exhaust out. These valves have to open and close at precisely the right time or the engine will run poorly if at all. The movement of the valves and pistons must be in harmony with each other. This choreography is the job of the timing belt or timing chain.Timing belts, or chains, rotate the shafts that control the opening and closing of the valves. Timing chains are metal and durable enough that they may never need to be replaced.Most vehicles, however, use a timing belt. Timing belts are tough and flexible, and considering the work they do, they last a long time for San Diego auto owners . But they do wear out. If the ... read more

Hello CA! Today's vehicle care topic is: Synthetic Oil vs. Petroleum Based Oil. Synthetic motor oil is a substitute for petroleum based oil. If you aren't currently using it, why not? Synthetic motor oil maximizes engine power and fuel economy. To see why, we'd need a microscope, so we'll have to settle for using our imaginations. The molecules of conventional motor oil are long hydrocarbon chains. Synthetic motor oil, on the other hand, has uniform, round molecules. Which is slipperier, a pile of pencils or a pile of marbles?Synthetic motor oil lubricates better because there's less friction. This results in myriad benefits: better wear protection, cooler operating temperatures, more power and better fuel economy. And synthetic oil doesn't sludge up like conventional oil so it prevents those small oil passages from clogging up. (We see that too often at John's Automotive Care in San Diego.)Some manufacturers are extending oil ... read more

When you drop your vehicle off at John's Automotive Care in San Diego, they don't just poke around under your hood looking for stuff to do. John's Automotive Care professionals have lists and procedures they follow for different types of service. First of all, your San Diego service center will note the mileage on your vehicle. They'll then check to see what inspections and services the vehicle manufacturer recommends for a vehicle of your make, model and mileage. If you are a regular customer, they will also check your vehicle's history.If the vehicle manufacturer's recommendations go beyond the services you've ordered, they'll let you know. They'll also indicate whether those services are urgent or if you can wait a while to take care of them. The John's Automotive Care pros won't do work that you don't agree to.They will, however, perform inspections while they're servicing your vehicle. They'll check belts, filters and fluids. They'll check your windshield wip ... read more

San Diego drivers may feel intimidated when they take their vehicles to a service center. They have questions but aren't sure how to ask. They don't want to feel embarrassed about their lack of knowledge. They don't want to make the service technician feel that they don't trust him.If your service advisor at John's Automotive Care uses a term you don't understand, just ask him to explain. Remember, they are the auto service experts. If they came to your place of work, they probably wouldn't understand the jargon, either. When you take your vehicle in to be serviced, make sure you understand the financial issues up front. Ask about payment policies, warranties and, of course, the cost of the work being done.It helps to understand basic services your vehicle needs. Know the difference between a quick check-up and a thorough inspection, which you are getting and which you are asking for. Understand that diagnosing a problem takes time, and time isn't free. If you have concerns about ... read more

Changes in vehicle design and manufacture have resulted in changed fluid requirements for our vehicles. With the sophistication of engines, transmissions, differentials, etc., it's best for San Diego residents to always use the proper type of fluid for their vehicle. Using incorrect fluids can actually damage your engine.As engines have become more sophisticated, new weights (or grades) of engine oil have been introduced. Today, there is a much wider range of weights for engine oil as well as a variety of formulations for different types of engines.Transmission fluid, brake fluid and coolant/anti-freeze have changed because the materials that go into making the systems they protect have changed. The fluids in our vehicles generally have two jobs: to lubricate and to prevent corrosion. The fluids formulated for your vehicle are specifically designed to protect the materials that make up its engine parts. Using the wrong fluid may leave some parts vulnerable to corrosion. Further, using ... read more

Today in our John's Automotive Care blog, we're going to talk about following recommended service intervals. Your vehicle isn't the only aspect of your life with recommended intervals: What about six-month dental cleanings and regular physical exams? Then there's laundry, mowing the lawn, paying your electric bill, changing your furnace filter - you get the idea.Now, what would happen if you didn't follow these intervals?For one thing, your teeth may get more cavities. You might not discover health issues that benefit from early detection and treatment. And you'd have to wear dirty clothes, be embarrassed by your overgrown lawn and have your power shut off.We all realize there are some things in life that we have to take care of regularly. If we don't, there are negative consequences. Our quality of life diminishes and it inevitably costs more money.Have you ever wondered, "How often should I bring my car in for scheduled maintenance?"  ... read more

Hello San Diego! Did you know that the first federally-mandated emissions control device was introduced in the 1960's? The Positive Crankcase Ventilation valve, or PCV valve, has been installed in CA vehicles since 1964 and represents the first legislation by the United States government to regulate harmful emissions as well as to improve performance in the country's vehicles.The PCV valve, as you can probably guess, is located on the crankcase. The crankcase is the lowest part of a vehicle's engine. It houses the crankshaft and the engine oil. The crankshaft connects to the pistons that power the engine.Pistons are pushed down when fuel is burned in an engine. This causes the crankshaft to rotate, which sends power to the transmission.  It ultimately turns the axles and causes the vehicle to move. Some of the gases released by the burning fuel squeeze around the pistons and down into the crankcase.If the escaped gases mix with the engine oil in t ... read more

The timing belt in your engine controls the opening and closing of the intake and exhaust valves. San Diego drivers need to replace it on a schedule to avoid failure.Timing belts are very difficult to get to, requiring quite a bit of labor to access. Timing belt replacement is one of the more expensive maintenance services, but the cost at John's Automotive Care to correct an engine damaged by a broken timing belt is much, much more.The timing belt has a tensioner to help maintain proper belt tension. The tensioner should be replaced along with the timing belt and any idler pulleys at the vehicle manufacturer’s specified service interval. Your John's Automotive Care service advisor can help you with the timing belt.Give us a call.John's Automotive Care6267 Riverdale StSan Diego, CA 92120619-280-9315http://www.johnsautomotivecare.com

Whether we're trying to save money, save gas or save the environment, most of us San Diego drivers have an interest in decreasing fuel consumption. We've all heard about ways to save money on gas in CA, but does it really add up to much? How much can we boost our fuel economy through preventive maintenance and more courteous driving?The US government has a website that actually answers that question. Let's look at some of the data and find out if any of these fuel-saving ideas are really worth the effort. We've all heard that a tune-up can improve gas mileage. It turns out that it can save us 4% at the pump. At $3.50 a gallon, that's 14¢ per gallon in savings, and at $4.00 a gallon, that's a 16¢ per gallon savings.Other common repair items can also save you at the pump. For example, if your oxygen sensor is faulty, it's not delivering the information to your engine's computer that allows it to calculate the right fuel-to-air ratio. The result? The f ... read more

Let's talk about something critical for all San Diego drivers: your brakes. Your vehicle is heavy, and it takes a lot of muscle to bring it and your passengers to a safe stop – so everything needs to be in good working order. Here's an explanation on how your disc brakes work: The wheel hub keeps your wheel attached to your vehicle. The brake disc – or rotor – is attached to the hub and rotates with the wheel as you drive around San Diego. Your brake pads clamp onto the rotor to slow the wheel.The brake caliper straddles the rotor and squeezes the rotor to slow it down. The calipers contain brake pads which press on the rotor when you put your foot on the brake. The brake piston causes the calipers to squeeze and release as you use your vehicle brakes.Your brake pads start to wear the first time you step on the brakes. Eventually ... read more