Most San Diego drivers don't even think about their air conditioner. Now here's a tip for San Diego vehicle owners: Run your air conditioner every so often during CA winters. This circulates the lubricant to help keep the seals from drying out. The air conditioner actually removes some of the moisture in the air. So if you have trouble with fogging on your vehicle windshield during CA winters or during a rain storm, running the A/C on the defrost setting should help. Now on some San Diego cars you can't run the A/C at the same time as the defroster. Don't ask me why, but I suspect lawyers were involved.Also, air and water can get into the A/C system. That can reduce the efficiency of the system and also lead to corrosion that causes damage. San Diego drivers should periodically purge the system and replace the refrigerant to remove the air and water.CA drivers would be wise to ... read more

Your fuel system needs to be clean to do its job properly. When it gets dirty, the results are lower engine performance, reduced fuel economy and impaired safety. It can even lead to costly repair bills for San Diego drivers. So keep your fuel system clean as part of your routine preventive maintenance.Fuel injectors have replaced carburetors in most of today's vehicles. These injectors deliver better fuel economy than a carburetor, but they can be compromised by rust, dirt and other contaminants. They need to be clean to maintain the correct pressure, spray pattern and volume of delivered fuel so that the vehicle engine can run at peak efficiency.There are products on the market that San Diego vehicle owners can add to their gas tank that will help keep your fuel injectors clean. These products will keep a clean fuel system clean but have trouble cleaning a system that has already gotten gummed up.If your fuel system needs a major cleaning, John's Automotive Care can ... read more

In very simple terms, a fuel injector is a valve that squirts fuel into your vehicle engine. Your engine control computer tells the fuel injector how much fuel to deliver as well as the precise time it should be delivered. Of course this happens thousands of times a minute in every single fuel-injected vehicle driving down San Diego roads.Most fuel injectors for gas engines are known in the San Diego automotive community as port fuel injectors because they deliver the fuel to a port just outside the cylinder. The fuel pump provides pressure needed to squirt the right amount of fuel into the engine. A few have recently introduced gas direct injection systems on some engines. They are now available at some CA dealerships. These systems inject the gas directly into the cylinders under very high pressure – many times the pressure of port injection systems. Although more complicated, direct in ... read more

There are a lot of drivers in San Diego who are due for a differential service, but had never heard of a differential before.With front-wheel drive being so common in CA these days, the differential is just taken care of during a transmission service, so most San Diego folks don't even have to think about it. And rear-wheel drive differentials don't need to be serviced for years, so it's understandable that it's not something on the top of your mind. It's not uncommon for people in San Diego to not know they have a differential, let alone know that it needs service.To better understand what a differential does, think about a track at any CA high school. There are lanes marked off on the track. For the longer distance races, the starting lines are staggered. The starting lines for the outside lanes are ahead of the starting lines for the inside lanes. That's to compensate for the longer length of the outside lanes. Staggering the starting lines means that each runner h ... read more

  Hello San Diego, let's talk about brakes. But the mechanical aspects of the brakes themselves are just one issue. There's also the power brake pump and brake fluid. And then there are the tires, which are critical to the effectiveness of the brakes.Let's step back. A new vehicle or truck rolls off a local San Diego showroom floor. It has brand new brakes with brand new brake pads. The brake lines and pump are filled with fresh fluid and are completely clean inside. And the tires are brand new, with full tread. It is ready to go.Naturally, braking power is at its peak performance. Now the miles/kilometers start to add up on the vehicle. San Diego drivers tend to focus on the brake pads. In the automotive business, the pads and shoes on drum brakes are called the friction material. That's because they provide the friction used to stop the vehicle. The pads are designed to be effective throughout their useful life – it's not until they are worn so thin as to be out of 'specs ... read more

Today, John's Automotive Care is writing about the proper fluids for your vehicle. It's become more complicated with changes in automotive design and manufacturing. It's not that people in San Diego are confused as much as they don't realize how much things have changed in recent years. If you have questions about the fluids in your vehicle, please don't hesitate to stop by John's Automotive Care. You can find us on 6267 Riverdale St in San Diego, CA 92120.Just give us a call at 619-280-9315. Let's take engine oil. Twenty or 30 years ago, there were just a handful of different weights of oil. The weight of an oil is a scientific measure of its properties, particularly its viscosity or thickness.It was common in those days to use a lighter weight oil in the winter when it's cold outside. That way the oil would be able to splash around inside the engine and protect the parts before it was fully warmed up. And a heavi ... read more

What type of technology do you use? Do you prefer an 8-track tape or an iPod? When it comes to winter tires, much of San Diego driver's perception dates back to when 8-track was the best way to listen to the Bee Gees.Twenty years ago in CA, winter tires differed from highway tires only in their tread design. CA drivers called them snow tires back then, and they had big, knobby lugs that were designed to give good traction in deep snow. They had the same rubber compound as regular tires and they weren't very good on ice, packed snow or wet CA roads. They were not even very good on dry roads. They really helped in deep or loose snow, but they did a poor job the rest of the time. They were loud and rode hard. People couldn't wait to get them off in the spring.Then all-season tires started to appear in San Diego tire shops. All-season tires are really a compromise between summer and winter performance. They have acceptable hot weather ride and tread life and can get CA drivers through mild ... 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

Custom wheels are one way that San Diego folks express themselves and personalize their vehicle. But they aren't as cheap and easy as sticking decals on your back window. There are several factors that need to be considered, including cost, the fit of the wheel, modifications that will have to be made to the vehicle, how the new wheels and tires will affect the operation of the vehicle, your driving habits and, of course, the style of the wheels. Most San Diego drivers start with the last factor: the style of the wheels. But that should be the last thing we choose. When considering custom wheels, you should first carefully consider your budget. Some wheels may require adjustments to your vehicle suspension system, brakes, or traction systems. You need to know what you can afford before you start shopping or get your heart set on a particular type of wheel. There are three basic ways you can change your wheels. First, you choose a ... read more

When San Diego drivers think about preventive maintenance, what usually comes to mind is oil, fluids and brakes. We don't generally think about our shocks or struts, but these auto parts keep our tires on the road.San Diego drivers don't think about shocks as often as oil changes because shocks and struts last a long time and wear out slowly. They don't need to be checked as often as our brake pads or air filters. By the time your shocks have 50,000 miles (80,000 kilometers) on them, their performance will have noticeable degraded. If you want to restore the handling and ride designed for your vehicle, try replacing your shocks and struts.Of course, if you drive off-road around San Diego, carry heavy loads, tow a trailer or put in a lot of mileage on poor driving surfaces, your shocks or struts will wear out more quickly. You'll need to replace them more often or upgrade to better shocks.Your suspension system uses springs and shocks to absorb the “shocks” a ... read more