Everyone in San Diego, CA, knows we are advised to go to our San Diego dentist twice a year.  Oral-conscious San Diego residents have a teeth-cleaning and examination. Once a year, we get x-rays to look for problems that can't be seen with the naked eye. When our dentist is done, he/she tells us what was found – "Everything's fine, see you in six months." Or "You've got a small cavity starting, let's schedule an appointment to take care of it." By the time you leave, you have a plan for addressing any necessary issues.This system works so much better than waiting for a painful problem before going into the dentist. Small problems are fixed before they turn into big problems. And you avoid those huge bills.If San Diego folks understand the wisdom of using this system for handling dental care, why do many resist when facing the same system for our vehicle maintenance? Following the vehicle manufacturer's recommended intervals can be confusing. First ... read more

If you've been paying attention, you've noticed that vehicle engines are getting more and more powerful in San Diego. At the same time, they are getting better and better fuel economy. I've gotta tell 'ya, most of that's because of technological advances in transmissions. To get a better understanding of why that is, let's talk bicycles.You've probably seen plenty of cyclists on San Diego roads. Perhaps you ride yourself. Then you know that a cyclist's cadence is the number of times per minute he or she pedals. The ideal pedal speed is the zone where they can most efficiently generate power over a sustained period of time. The experienced CA cyclist uses her gears to keep her pedal speed in the ideal zone whether she's climbing a hill, cruising on a flat stretch or killing a downhill.Think of it this way: if you have a 1-speed bike, you really have to pump hard to get up to speed. Your top speed is limited by how fast as you can pedal. And if you're climbing a steep C ... read more

Today, we are talking about your PCV valve. Unburnt fuel is forced into the crankcase as your engine runs.  The PCV (positive crankcase ventilation) valve vents this unburnt fuel and oil vapors from the crankcase and sends it back into the air intake system to be burned in the engine.  A clogged PCV will not allow these vapors to escape. This can dilute and contaminate the oil, leading to damaging engine oil sludge. It can also cause vehicle engine corrosion, something we see occasionally at John's Automotive Care. At high speeds on CA freeways, the pressure can build up to the point that gaskets and seals start to leak. Back in the old days, vehicles were simply installed with a hose that vented these gases out into the atmosphere. But starting in the 1964 model year, environmental protection laws required that these gases be recycled back into the air intake system to be mixed with fuel and burned in the vehicle's engine.This is much better for air qu ... read more

When asked, most people think they are good at multi-tasking. Scientific studies, however, reveal that only around 2% of the population can truly demonstrate the capacity to effectively multi-task. For the rest of us who are not so biologically wired, no amount of practice can increase our effectiveness at multi-tasking. Turns out, multi-tasking is almost a superpower. Think of fighter pilots: capable of maintaining their orientation in three dimensional space and performing specific and highly complicated functions while accessing life threatening situations and coming up with an appropriate response. Admit it – you can’t do that. Yet when it comes to driving, we seem to think we are very capable of safely operating a motor vehicle with myriad distractions. 77% of young adults feel somewhat confident that they can safely text and drive while 55% claim it’s easy to text and drive. Can they possibly be right? Let’s look at some statistics. Nearly 23% of all accid ... read more

Many San Diego drivers probably don't think of their shock absorbers as an important safety system; but that's just what shocks and struts are. They're all about ride control – keeping your vehicle tires in contact with the road and managing body motion.Every time you hit a bump or pothole on a San Diego road, your tire wants to bounce up. The bigger the bump, the higher the bounce. Your shocks or struts push down on the tire to maintain the traction you need to start, stop and turn.If you've ever ridden in a vehicle with bad shocks, you know how it wallows on corners. The front end dives when you hit the brakes and the rear end squats when you accelerate. It's not only uncomfortable, it is difficult to handle.You may have heard vehicles described as having “flat cornering." That means that when you take a corner, the body doesn't roll very much. When shocks start to get worn, your vehicle will roll more on corners. The weight of your vehicle ... read more

Most San Diego folks worry about running out of gas or having a breakdown on the side of the road. That is why we practice preventive maintenance on our vehicles — that and to keep our repair bills down. But one important part of preventive maintenance that may get overlooked by drivers in San Diego is a periodic alignment inspection. Poor alignment causes tires to wear rapidly, unevenly or both. This means they will have to be replaced early, and new tires are more expensive than an alignment check in San Diego. Bad alignment can also cause damage to suspension and steering systems, which can be expensive to repair in San Diego. Tire wear on misaligned wheels can also lead to blowouts, which are dangerous, can lead to serious accidents and can seriously damage your vehicle. Also, poor alignment itself can be the cause of an accident since the vehicle may not steer properly. One or more wheels on your vehicle can be knocked out ... read more

Today in the John's Automotive Care auto care blog, we're going to talk to San Diego drivers about oil change intervals. It seems that as engine technology advances, oil change intervals become longer for John's Automotive Care customers. For example, recently four of the world's largest vehicle manufacturer's shortened the published intervals for several of their engine models. They originally published intervals that extended out to a much as 8,000 miles (13,000 kilometers).In real world San Diego driving, the oil started to sludge up before the recommended change interval. Oil sludge is a thick jelly-like substance: quite literally petroleum jelly – like Vaseline. This goop was clogging vehicle small engine passages so the oil wouldn't flow to some parts of the engine. This resulted in engine damage. We see it too often at John's Automotive Care in San Diego.The vehicle manufacturers began to offer an extended warranty to cover sludge damage. But there was a ... read more

It's important for San Diego drivers to know battery basics. First, let's talk about which is harder on a battery – hot or cold CA weather. Most San Diego area drivers think it's cold weather because that's when we call on our batteries to have enough power to start a cold vehicle engine. However, heat does more damage to a battery than cold. Truth is, our batteries start to die a little from day one. Keeping a full charge slows the process, which is hard with short San Diego trips because the alternator doesn't have time to fully recharge the battery from starting the engine. San Diego drivers can top off the charge with a computer controlled battery charger – say, once a month in the summer and every three months during the winter.As far as how long a battery will last, statistics show that 70% have given up the ghost within four years. By that time, they aren't capable of taking a full charge like they used to ... read more

People near San Diego, CA, often ask John's Automotive Care how often they should have a particular service done. It's a great thing to ask. You can look at your owner's manual or have your San Diego, CA, service advisor at John's Automotive Care look up your vehicle in a service database. What you find is often a surprise to people – there are actually two service schedules.One is the regular schedule and the other is the severe service schedule. Service intervals are shorter on the severe service schedule. When asked, most folks in San Diego will say that their driving is normal and that the 'regular' schedule probably applies to them. 'Severe service' sounds pretty extreme – 'I don't drive like that.'Well, here is what the manufacturers say constitutes severe driving conditions; you can draw your own conclusions. Most of your trips are less than four miles (six and a half kilometers). Most of your trips are less than ten miles (16 km) and outside temper ... read more

There are a lot of new features, both optional and standard, on San Diego drivers' vehicles these days. One you may not have heard of is called a cabin air filter. Simply put, its job is to keep the air in the passenger compartment of your car nice and clean.A cabin air filter is similar to the filter you use on your furnace at home in San Diego. Cabin air filters can catch particles down to three microns. By comparison, a grain of sand is 200 microns. So cabin air filters are effective against dust, dirt, pollen, mold spores and most pollutants in our San Diego area atmosphere. Good news if you suffer from any types of allergies, or if you live in an area in CA prone to air pollution.Cabin air filters are generally located in the engine compartment or under the dashboard. They can be tricky to access and replace, so you'll probably want to go to your friendly and knowledgeable service advisor at John's Automotive ... read more