Brake flush

Pro Tip: When You’ll Need A Brake Flush

We see a lot of cars coming through that have well used brake fluid in their systems, unfortunately it is often an item that is overlooked when folks think about maintaining their vehicles, and it is inexpensive to get a brake flush done and it will have your car in a safer position to handle what the road will throw at it.

First, a general explanation about brake fluid, it’s properties and what it does. In general we’ll be talking about DOT 4 type brake fluid, and while there are some others out there with differing properties, DOT 4 tends to be the most widely used currently. DOT 4 brake fluid is a hydraulic fluid that is not appreciably compressible, is hygroscopic(attracts moisture), and has a dry boiling point of 446 deg F and wet boiling point of 311 deg F. The “wet” boiling point is defined as when the fluid has 3.7% moisture content. More on that in a minute.

Essentially, when you push your brake pedal, the fluid gets pushed through the system, and pushes the brake caliper pistons which push your brake pads together onto the brake rotor to stop the vehicle. A properly working system with fluid that is within specification will be able to handle all expected braking conditions without any danger of brake fade, failure or any other type of mishap. The key element for the specification of the fluid is measuring it’s moisture content. We have a special tool that does this for us, and we recommend that fluid not be allowed to reach 3% moisture content. Heres why:

One of the key elements of the fluid is it’s ability to withstand the high levels of heat that are generated while braking. The main aspect of this is that your brake fluid should be able to handle any conditions that get thrown at it. Remember we talked about the wet boiling point? When brake fluid boils, it vaporises into a gas, and loses all of the non-compressible qualities that it had while it was in its liquid form. So this means that it is no longer pressing the brake pads against the rotors, and thus no longer slowing the vehicle. This usually occurs during a heavy braking situation where you probably REALLY need your brakes to be working at their best. And this is the key to having the system functioning as it should. With brake fluid that has 3% or more moisture content, your braking system may seem to work fine with no noticeable symptoms. But your brake fluid is not ready to handle all situations as it should, so encountering those heavy braking situations will potentially lead to the boiling of the fluid and a loss of braking ability.

The additional benefit of flushing your brake fluid is to keep all of your braking components free of corrosion and rust that can occur when the fluid has a high level of moisture content. We recommend that your vehicle have its brake fluid flushed when it measures 2% of moisture content, or every 2 years.

Stay tuned for more pro tips, and as always, we’re here for you and are happy to answer any questions you might have.

This Way For Service!!

Learn About Your Car’s Cooling System

A great article from Road and Track explaining some of the intricacies of your engines cooling system:

“Let’s start with this: Heat is the enemy. Well, maybe not the enemy. Call it a necessary evil, like a real job, health insurance, or in-laws.

If you own a car that burns gas, what, you think it’s going to get cold? Those explosions that make the pistons go up and down generate heat. A lot of it. If that heat isn’t carried away, good-bye, moving parts, hello, expensive seized lump. On the other hand, some amount of heat is a good thing; when an engine is warm, it produces fewer emissions and is more efficient.

To keep things in the Goldilocks zone, every car has a cooling system. This is life or death for an engine. Cooling-system problems won’t just stop you, their wake of destruction will reduce you to tears. This is worst on cars with a long, straight aluminum cylinder head (think BMW inline-six); after overheating just once, heads like that can warp or crack. Rebuild time commenceth.”

Read the rest of this article over at Road and Track:

Crunchy to the Rescue!

Let’s hear a round of applause for Crunchy the shop truck for making it all the way from Norcross with our new Tire Installer and Balancing machines! If you need tires, we’re ready when you are!



CSA: Avoid travel on I-20, top end of I-285 this weekend

This Community Service Announcement coming courtesy of Decaturish and GDot:
“The Georgia Department of Transportation says that bridge joint repairs and sign structure work will cause delays on the top end of I-285 and I-20 this weekend.

GDOT is asking drivers to avoid travel that is “non-essential” on these roads.”

See Decaturish over here for full project list from GDot:

Tire Pressure

Service Course Pro Tip: Tire Pressure

We often see customers cars in the shop with tire pressure that is well below the recommended pressure. The major short term effect of low tire pressure is a reduction in gas mileage. Higher levels of heat generated by the tire are also a symptom of underinflated tires. Over time the additional friction and heat generated by the tire can cause them to prematurely wear out.

The driving symptoms of under inflated tires can be a “squirmy” feel while cornering or braking, and the tires squealing while cornering. While these can be felt by an experienced driver who is looking for those symptoms, the best way to be sure is to check your tires with a gauge. These days digital pressure gauges can be found online for $12-20 (see here), but another good choice is an analogue dial type gauge. Older pencil type gauges tend to be less accurate than dial or digital gauges, so those should be steered clear of.

How much pressure? The answer to that question is that it varies by vehicle. But the good news, is that your vehicle will usually tell you. Check your owner’s manual to find out where to look on your vehicle to find the recommended measurement. This number is usually indicated either on the driver’s door pillar, the glove compartment door or sometimes on the gas filler door.

When should you check them? We strongly recommend that you check them monthly. With pressure gauge in hand, you can easily check all four tires in less than two minutes. Tires should be checked when cold, so before you head out, test the pressure all around and you’ll be confident that you’re all set to drive. Once a low pressure situation is found, you can plan ahead to leave on your next drive a few minutes early so you can stop in at a gas station to top up your tires. And of course, you are always welcome to stop by our shop here for a quick top-up as well.

Stay tuned for more pro tips, and as always, we’re here for you and are happy to answer any questions you might have.

This Way For Service!!

Honda, Toyota And Chrysler Recall 2.13 Million Cars for Airbags that Deploy without Warning

If you’re an owner of a 2003–2004 Honda Odyssey, 2003 Acura MDX, 2003–2004 Toyota Avalon, Corolla, and Matrix, 2002–2003 Jeep Liberty, 2002–2004 Jeep Grand Cherokee, and 2003–2004 Dodge Viper you can expect to be hearing from your manufacturer soon regarding their respective recalls for faulty air bags. Read all about it over at Car and Driver:

If you think you might be affected by this recall, you can check your vehicle by entering its VIN into your manufacturers website: