AUTONET TV

What Is a Differential and Do You Have One?

With front-wheel drive being so common these days in Walnut Creek, CA, the differential is just taken care of during a transmission service, so most Walnut Creek drivers 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 Walnut Creek customers' minds. It's not uncommon for drivers to not know they have a differential let alone know that it needs service.

Call Gilmore's Auto Service in Walnut Creek at (925) 939-9430 for information about differential service, or stop by our Walnut Creek, CA, auto center at 2151 N Broadway, 94596.

To better understand what a differential does, think about our local Walnut Creek high school track. 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 has the same distance to run.

The differential compensates for the difference in speeds between the inside wheel and the outside wheel in a turn, because they have to travel together through slightly different distances.

It's a very important function. When you think of it, all the power to get a vehicle moving goes through the differential. Most cars in the Walnut Creek, CA area weigh between 3,000 and 6,000 pounds (1,400 and 2,800 kg) – trucks even more. The power from the engine goes through the transmission and then through the differential to the drive wheels.

That's a lot of work and requires very heavy duty parts. And those parts need protection. The differential fluid lubricates the gears in the differential and keeps them cool.

The fluid eventually gets dirty and worn down. Some kinds of differentials require special additives that break down over time. So vehicle manufacturers recommend intervals for replacing your differential fluid.

The professionals at Gilmore's Auto Service will drain the used fluid and check it out for metal bits, which could be a sign of excessive wear on the gears. Then they’ll replace the fluid and install the additives if necessary.

Your Gilmore's Auto Service service advisor can look up the vehicle manufacture's recommended service interval or you can check your owner's manual. Give us a call at (925) 939-9430 for more information about your differential service.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

The Gilmore's Auto Service Guide to Saving Fuel: Car Weight

The team at Gilmore's Auto Service in Walnut Creek, and CA car owners are all talking right now. Better gas mileage. Fewer emissions. Walnut Creek drivers want to save the environment and their pocketbooks.

And we all know—or should know—that preventive maintenance will help maximize fuel economy. But is there something more people in Walnut Creek can do? After all, some of us folks can't cut back on our driving, and others would like to do more to economize.

Weight is one major enemy of fuel economy. The more you lug around in your vehicle, the more fuel you have to burn to get from point A to point B. And that means buying more gas in Walnut Creek and producing more emissions.

Of course, your vehicle's weight isn't negotiable. And you can't do much about the weight of your passengers. And this isn't an article about diet and exercise.

But look around your vehicle. Are you hauling a bunch of unnecessary weight around? Do you really need your golf clubs every time you leave your home? Store sports equipment in the garage. Load it when you need it and store it when you don't. Who knows? The extra exercise just might reduce the other type of weight in your vehicle.

The same goes for anything else in your car: make-up kits, music collections, extra electronics, spare clothing; whatever your particular extras may be. Pack it when you need it; store it when you don't.

Clean out your trunk. You'd be surprised how much weight you're lugging around in plain old junk. Toss old papers, leftover food and regular old dirt. Even if it's not a lot of weight, you'll feel better when you get into your car. A good cleaning is also part of good car care.

Now, don't toss stuff you really do need. You do need that spare tire—the one in your trunk. And a kit of emergency essentials is not a bad idea. But just carry around the day-to-day essentials. You can pack a more extensive kit and store it in your garage, then toss it in your vehicle when you go on a longer trip, but you don't have to lug it around all the time. After all, are you a driver? Or are you a junk chauffeur?

Lose the junk and save some money in Walnut Creek.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Let Gilmore's Auto Service Help You Keep Your Vehicle Another Couple of Years

Walnut Creek area residents may remember when the U.S. government's “Cash for Clunkers” program made a splash on the news scene. People were offered incentives to trade in old vehicles for new, in the interest of better and improved air quality from reduced emissions.

But a lot of Walnut Creek drivers want to hang onto their old clunkers. They're dependable and they're paid for. Owners would love to see the odometers on those vehicles turn past 200,000 miles (320,000 km), as long as the repair bills don't get too expensive.

There are a lot of vehicles on CA roads that have run past the 200,000 mile (320,000 km) odometer reading. Is there something that their owners are doing that keeps these vehicles on the road? Or did they just win the “lemon lottery,” and luck out by getting a particularly good vehicle? Not surprisingly, most of these owners have something in common. They never skip an oil change. Can keeping a vehicle on the road for 200,000 miles (320,000 km) really be that easy for Walnut Creek drivers?

Actually, it makes sense. Oil is the lifeblood of a vehicle. Clean oil ensures that the engine will run efficiently and staves off the build-up of sludge that can eventually damage engine parts. Oil changes remove dirty oil and replace dirty oil filters, keeping an engine clean and running smoothly, just like eating right keeps our hearts healthy by preventing build-up in our arteries.

But there's another reason why not skipping an oil change can result in a longer life for your car. When you bring your car in to Gilmore's Auto Service for an oil change, all of the fluid levels are checked and topped off. If these fluids are depleted, dirty or low, they can damage the engine.

If a fluid is significantly low, it usually indicates a leak somewhere, leading to an inspection of relevant parts. This inspection and the replacement of the worn part can prevent repair bills and maintain the health of the engine.

At an oil change, your technician at Gilmore's Auto Service will also do a quick check for worn belts or hoses, uneven tread wear, leaking shock absorbers and other signs of wear and tear. This advance notice allows the owner to replace parts before they break down and possibly damage your vehicle.

The oil change is also a good time to review any other service that the vehicle might need. Many car owners rely on their pros at Gilmore's Auto Service for good auto advice on check-ups and follow-up vehicle care that will keep older cars running well.

Parts wear out on older vehicles. There's no avoiding it. As the odometer chugs upward toward 200,000 miles (320,000 km), the vehicle will need several batteries, a couple of alternators and water pumps, a new set of shocks and possibly some brake rotors. But these items—all together—add up to far less than the cost of a new vehicle.

Good vehicle care and preventive maintenance are the hallmark of Walnut Creek drivers who have kept their vehicles on the road and running past the age when most of us have given up and headed back to a car lot. We can learn from their wisdom.

So treat your car right: Take good care of it and don't skip the check-ups at Gilmore's Auto Service in Walnut Creek. 

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

The Gilmore's Auto Service Guide to Servicing Your Differential

Differential? What's that? And what's it for? I've been told by my service advisor that I need to get it serviced, but is that on the level?

Do these questions sound familiar? They're not uncommon for Walnut Creek drivers. A lot of us in Walnut Creek don't know what a differential is or what it's for. Every vehicle has a differential, and, yes, it does need to be serviced. In fact, it's more important to the operation of your vehicle than the air conditioner or windshield wipers.

A differential allows your vehicle tires to move at different speeds. This happens more than you think. The best example is when a vehicle is turning. The inside wheel travels a much shorter distance than the outside wheel during a turn. This means the outside wheel has to move faster than the inside wheel. Without a differential, your tires would hop and skip while turning. They would also lose traction in sand or snow.

The location of your differential depends on what kind of vehicle you drive. On a rear-wheel drive vehicle, the differential is located in the back. For a front-wheel drive vehicle, it is located on the front, but it is usually called a transaxle. Four-wheel drive vehicles have three differentials: one on the front, one in the back and one in the middle. This center differential compensates for differences in speed between the front and rear wheels.

Your differential contains strong gears that need to be protected from dirt, debris, water and other contaminants. A differential is sometimes referred to as a “gear box.” The work of these gears is to transfer power from the vehicle drive train to the wheels.

Your differential needs fluid to lubricate and cool the gears. This fluid, even though enclosed in the “gear box,” can get dirty because the gears grind down over time, releasing tiny bits of themselves into the fluid. Also, the additives in the differential fluid break down and need to be replaced. That's why preventive maintenance for your vehicle needs to include servicing the differential.

Your owner's manual can give you recommendations on how often to service your differential. But you should also consult with your friendly and knowledgeable Gilmore's Auto Service professional. Gilmore's Auto Service can give you some good auto advice on whether your vehicle needs to be serviced more frequently. For example, if you drive in hot or cold CA weather conditions, your differential will need to have its fluid changed more often.

Severe conditions will also affect your vehicle care routine and your differential. Check your owner's manual for a definition of “severe service” conditions that affect your vehicle. Examples may include driving with frequent stops and starts, a lot of short trips around Walnut Creek, hot or cold CA weather conditions and towing.

Off-roading is particularly hard on a vehicle's differential. If you are an off-roader, especially if you cross CA streams or waterways, it is important that you service your differential more frequently than the recommendations suggest.

Properly servicing your differential will extend its life and keep you out of Walnut Creek auto repair shops. A smooth ride is the result of proper preparation and smart choices.

 Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net