If you own a newer vehicle, your vehicle’s manufacturer may require that it use synthetic oil instead of conventional oil.  Synthetic oils are more stable, don’t break down as easily, and provide better engine protection than conventional oil. All those things can prolong the life of your engine and help it run better. Imagine the damage that could happen to your engine as it operates at high speeds and very hot temperatures.  Oil reduces the friction between the metal parts.  That’s why it’s important that it maintains its lubricating properties for a long time, which synthetic oil does better than conventional oil.   Clean oil is better than dirty oil because it has fewer impurities.  Synthetic oil is purer because of how it’s formulated and manufactured.  Plus, as the outside temperatures change, the ability of oil to operate in those conditions is important.  
For example, the colder it gets, it’s important f
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For most drivers, at some point you’re going to have a flat tire. Depending on how it was damaged, it may have to be replaced.  But sometimes, a repair will do the trick, as long as the puncture isn’t on the sidewall and the hole is smaller than ¼ inch/6.35mm in diameter. Here are the three common ways your tire can be fixed. One way is to put a plug in the hole.  Since most tires are damaged by running over sharp objects such as screws and nails, the small hole from which the air is escaping is on the part of the tire that touches the road. If it’s in the sidewall, it most likely can’t be fixed.   In the plug method, a technician inserets a rubber plug.  It is covered with some sticky, gluey stuff, and is pushed into the hole from the outside. That plugs the hole and stays in place, thanks to the glue. Friction from driving heats it up and seals the deal.   Another method is to patch the hole.  For this, your tire has to fir ... read more

No matter what the weather is like outside, your internal combustion engine expects to keep its cool all the time, even when it's really cold.  That's because engines create the power that moves you to your destination by a series of tiny explosions of a fuel and air mixture. In turn, that generates a lot of heat in a small space. Your vehicle has a complete cooling system with a lot of different parts that work together to keep the temperature at a point where the metal engine parts won't heat up enough to warp.  Its lifeblood is coolant, a liquid that circulates through the engine (and, in most vehicles, the transmission, too) through a series of hoses and tubes.  In order to get rid of the coolant's heat, your vehicle has a part you probably recognize: the radiator.  It does what its name proclaims: radiates heat.  The radiator has a series of thin metal fins that coolant goes through, and when outside air passes over them, the heat is dissipated from the ra ... read more

Today's John's Automotive Care article focuses on severe service maintenance. Many San Diego drivers are not aware of them and yet there are also very vocal advocates in CA who think that severe service schedules apply to everyone. Somewhere between a complete lack of awareness and the dire blanket statements lies a reasonable approach to severe service maintenance at John's Automotive Care.To back up a little, vehicle owner's manuals have schedules for preventive maintenance: things like oil changes, transmission service and so on. They say you should change your oil after a certain distanced traveled or after so many months. San Diego drivers understand this very well. What they may not know is that there are actually two service schedules: the regular schedule and the severe service schedule. The mileage and time intervals are lower on the severe service schedule.Now when you hear 'severe service,' you may think it doesn't apply to you because ... read more

So you almost got through the winter until, one day, your muffler started sounding like a dragster, loud and obnoxious.  It's not surprising.  All that road salt and brine can cause rust to punch holes in a muffler, and that should raise a big, red warning flag about the safety of your vehicle. One big concern is carbon monoxide, a poisonous gas that can drift into your cabin if your muffler is leaking. You've probably heard about people whose home furnaces have leaked carbon monoxide and overcome families inside.  Carbon monoxide can first cause you to feel dizzy and nauseous.  It can even render you  unconscious—even kill you.  So if your vehicle's muffler is leaking that gas, well, it's nothing to mess around with. Oh, and how about that noise? You may get a ticket since many municipalities have laws against noisy exhausts.  Your muffler may be making a clunking or rattling sound when the engine's running or it may be spewing thick exhaust sm ... read more