Most CA auto owners know that their vehicles need regular preventive maintenance like changing the oil and filters, rotating the tires and refilling the washer fluid. But did you know that your air conditioning system needs routine maintenance as well? Taking care of your air conditioning system can extend its life and prevent costly repair bills.Why is it important for San Diego area drivers to get routine maintenance on their air conditioning system? First, the refrigerant contains an added lubricant. As the refrigerant circulates through the air conditioning system, its parts are lubricated. This constant lubrication keeps the parts functioning well. But over time, this lubricant is used up, and without it, the parts will eventually seize up and fail.San Diego folks should understand, however, that the air conditioner will continue to pump out cool air even without the lubricant, so you won't know the syste ... read more

Diesel engines have been used extensively in Europe and Asia for many years. They haven't been as common in the San Diego area because of the high sulfur content in our diesel fuel. But the government is now mandating lower sulfur content and, as a result, we are going to see more San Diego diesel-fueled vehicles on the road, especially in passenger cars and SUV's.Diesels are popular in CA because they get better fuel economy than gas-powered engines. They also last longer. Modern diesel engines are quiet and powerful. And if you associate diesel engines with black smoke, then you're not up with the times. That smoke is a thing of the past.Diesels don't produce any more pollutants than gasoline engines. The pollution standards for diesel-powered vehicles are as strict in CA as for other vehicles.Also, diesel engines can run on bio-diesel fuels as well as fossil fuels. Diesel fuel can be produced from vegetable oil or from cellulosic w ... read more

The crankcase is the lower part of the engine where the crankshaft is housed and where the engine oil lives. The crankshaft is connected to the pistons that power the engine. When you are diving around San Diego, fuel is burned in your vehicle engine, it pushes the pistons down and the crankshaft rotates and sends power to the transmission. Some of the explosive gases from combustion squeeze past the pistons and down into the crankcase.Now this gas is about 70% unburned fuel. If it were allowed to remain in the crankcase, it would contaminate the oil and quickly turn it to sludge. Sludge is like Vaseline and clogs passages in the engine, leading to damage. Also, the pressure build up would blow out seals and gaskets. So in the old days, there was just a hose that vented the crankcase out into the air. Obviously, not good for our air quality in San Diego, CA.Enter the PCV valve. It's a small, one-way valve that lets out the gases from the crankcase and routes them back into th ... read more

People in San Diego have been hearing a lot about higher oil change intervals these days. Maybe you're wondering: What are the key issues?Some new vehicle manufacturers are now recommending much higher oil change intervals than they have in the past. As much as 5,000 to 8,000 miles (8,000 km to 13,000 km) or more. This practice came under scrutiny when four of the largest new vehicle manufacturers announced that owners like those in San Diego were experiencing engine damage resulting from these higher oil change intervals.The manufacturers' standard oil drain service for particular vehicles was scheduled at around 7,500 miles/12,000 km. People following these recommendations were experiencing engine damage. It turns out that oil sludge was building up. This caused small oil passages to clog and engine parts to fail.What causes oil sludge? It's a factor of time and mileage. There are hot spots in every engine that cause oil burn off that leads to sludge ... read more

Any San Diego driver who understands preventive maintenance knows that “if it ain't broke, don't fix it” is bad auto advice. Replacing a part before it breaks is much less costly for San Diego residents than repairing the engine damage that comes after a part breaks or fails. A good example of this is the serpentine belt.The serpentine belt gets its name because of its circuitous path around the engine. The serpentine belt is driven by the engine and powers a number of systems, as follows:1. The serpentine belt spins the compressor that generates the cool air for the air conditioning system.2. The serpentine belt powers the alternator. The alternator generates electricity for use in the vehicle's electrical systems and to charge the battery. Without the alternator, the battery wouldn't last more than a few miles.3. In many San Diego residents' vehicles, the serpentine belt runs the pumps for both the power steering and the power brakes. In other vehicles, the power steering ... read more