How will I know if the oil filter of my Oldsmobile Cutlass Calais should be replaced already? What would be a good benchmark or schedule?

Manufacturers have prescribed schedules and recommendations for car maintenance. But as the vehicle gets older, more frequent oil changes may be done. As you change oil, you might as well check the filter and have this replaced as needed. If you fail to change the filter, dirt, small debris, and other harsh elements trapped in the filter will start to mix with oil. If the filter is already restricting the flow and it can no longer trap dirt, oil can easily get contaminated with carbon, blow-by gases, moisture, and microscopic metallic grit. Contaminated motor oil can't provide the needed lubrication and protection for the engine. It may have a hard time keeping the engine cool and clean, making it less effective.

How can I tell if the brake rotors of my Oldsmobile require immediate replacement?

If the vehicle starts to wobble or you experience some pulsations as you drive at highway speeds, that's a symptom of brake rotor wear and damage. These usually mean that rotors are severely warped or worn. Rotor wear or damage can be caused by brake pads that are worn too thin. As such, the brake pad metal can rub against the metal of the rotors. Brake caliper pressure might also press into the rotors. This will develop into heat spots and grooves, which will only cause more damage to the brake rotors. If you notice any irregularity with the brakes or notice unusual brake noise such as squealing, screeching, and squeaking, you should have the crucial brake parts checked even before you experience longer stopping distance and reduced braking power. The rotors may be resurfaced to restore their flat, parallel, and smooth surface or replaced if damage is too deep or severe. Rotors last longer than pads. It may take about three brake pad changes before you'll need to replace the rotors. The service life of the rotors depend on your driving habits, the type of rotors used, the road and driving conditions, and manufacturer standards. Regular brake inspection will save you the trouble.

Why is tire pressure that crucial? Can right air pressure really prolong the life of tires?

The primary cause of tire damage and wear is improper inflation. That's why you have to monitor the tire pressure at least once a month and should correct it as needed. If the tires are over- or under-inflated, they can develop uneven damage on the tread and cause accelerated wear. You also won't get good traction if the tire pressure isn't right since the tires can't achieve optimum tread contact with the road. This may affect braking and cause premature tire wear. Under-inflated tires tend to generate more heat, which is bad. By maintaining the right air pressure, tire blowouts can be prevented. Gas mileage can also be improved by up to 3 percent and better vehicle handling can be enjoyed.

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