Solid and vented rotors made with gray cast iron are the most common types of rotors. Drilled and slotted rotors are a variation of the same design. A solid brake rotor is just that – solid. There is no space between the two friction surfaces. A vented brake rotor more commonly has a space between the two friction surfaces of the rotor. This helps with cooling and is more common on the front of the vehicle because front brakes do 70-80% of the braking and endure the most heat.

Unlike slotted or drilled faced rotors, general stock replacement rotors are normally solid faced rotors that are either solid or vented. When replacing a rotor, there should be little confusion as to whether you need a vented rotor or not. If your car came with a vented brake rotor, then the replacement part will be a vented brake rotor. If the car came with a solid brake rotor, the replacement part is a solid brake rotor. No solid rotor replacements are available for a vehicle that came originally equipped with a vented rotor.

Slotted and drilled rotors are a performance modification that do not increase braking power, but might aid in the cooling of the rotors in high heat situations. There are both advantages and disadvantages to having slotted or drilled rotors. One rule of thumb is that if you are just daily driving, there is no reason to get slotted or drilled rotors other than to improve the way your rotors and wheels look. (Drilled and slotted rotors can have an aesthetic appeal to them because they may have a rust prevention measure applied to them and can be indicative of a performance braking system.) One disadvantage of drilled rotors is that they will provide more friction against your pads and reduce the life of them. Another disadvantage is the potential for a drilled brake rotor to crack when subjected to thermal stress. A drilled hole can upset the grain structure of the metal; the result is an uneven temper in the metal. As the brake rotor cools, the uneven temper can cause cracks. The most common crack seen is located from the outer most drilled hole to the edge of the brake rotor. Since the edge of the brake rotor is the first to cool, this is where the most uneven area of cooling occurs. For this reason, drilled rotors are not well suited to racing conditions in which high brake component temperatures are always occurring. Cracks cause vibrations and the larger the crack the more dangerous. The advantages are that the scrub friction of the holes and slots, while increasing the wear on your pad, reduce the chance of the pads becoming glazed.

Slotted and drilled rotors have a series of slotted channels, drilled holes, or both. These rotors primary purpose is to reduce the effects of brake fade. When the temperature is too hot for the pad and rotor to work properly together, brake fade occurs, which refers to the reduced feeling of brake power. The high temperature causes the brake pads and rotors to release a gas, thus reducing the friction that they would provide at lower temperatures. The slots and drilled holes are a means to dissipate this gas and reduce brake fade. The drilled rotors may even help cool the braking system; however, the drilled holes may encourage the temperature related fractures previously mentioned. Of course, when you are experiencing brake fade, you are punishing your rotors to the point that you could warp or crack them regardless of whether or not they are slotted or drilled.

Our vehicles can be costly, and for that reason, we all want to take good care of them and make sure we can get as much life out of them as possible. In this, most of us want to know what we should do to help our vehicles along but we also want to know what not to do, so that we arent wasting our money.

So what are some of the basic car care myths professionals have identified?

1. Myth #1 Tune-ups How often should you have your vehicle tuned up? Do you know? Most engines are computer monitored and controlled the good news with this is, they dont need tune-ups as often as a traditional engine. There was a time that with a standard tune-up, it often called for new ignition parts such as a distributor cap, spark plugs, and points and rotors. Besides spark plugs, which usually don’t have to be changed until 100,000 miles, today’s cars aren’t built with points and rotors, and many engines don’t have distributor caps that need replacement as often.

2. Myth #2 Having Your Car Lubricated In the old days, cars had chassis that needed lubrication. All that metal, potential rust you name it, the car needed to be greased. But now, cars are a combination of metal and plastic and therefore need little additional lubrication.

3. Myth #3 Flushing Your Radiator Annually – Manufacturers have made significant advancements in engine cooling systems during the past few years with closed systems that recirculate coolant. These new systems don’t lose coolant as often, and coolant manufacturers have also made advancements in their products’ chemical components with synthetic materials, making the seasonal radiator flush almost extinct. It is still important to check fluid levels periodically–especially before long trips–and use the manufacturer-recommended coolant. You should change your coolant about every four years. Coolant chemicals last longer than they used to, and newer engines aren’t going to be damaged by leaving it in long.

When changing your coolant, try a premixed formulation rather than adding tap water, which contains minerals that can cause trouble.

Some coolants will need to be mixed with water, in this case use only distilled water which doesnt have the hard minerals in it.

For those who live in extreme climates, hot or cold, then you should be paying much more attention to your coolant than others.

4. Myth #4 – Wheel Alignment We all want to keep our car in balance and were taught growing up to make sure our vehicle had the tires rotated frequently so that it stayed in alignment. Although it’s important to keep tires properly maintained and inflated, it’s not always necessary to have them aligned every time they are rotated. A majority of manufacturers recommend a wheel alignment and wheel balance only if there is a major issue with the car pulling to one side or another.

5. Myth #5: Winterize Your Car Many grew up with the notion that before winter came, you had to winterize your car. Your cars maintenance doesn’t have to be tied to the seasons. Todays modern cars dont require the same amount of attention. Stores say, other than possibly changing to winter tires, modern cars don’t require special attention at this time of year the way that your parents’ car might have.

What can you do for your car before winter? During colder months, it is advisable for you to keep more gas in your car’s tank. Why this is due to the fact air carries moisture and water, which can freeze and crystallize. The more gas in the tank, the less air – and less chance of ice forming inside where it could get into fuel lines and cause trouble, he says.

So, dont spend unnecessarily, in these times, we all want to be a bit wiser about where our dollar goes. And enjoy your car for as long as you have it.