The 30/60/90 rule refers to the recommended mileage intervals for major vehicle maintenance checks, occurring at 30,000, 60,000, and 90,000 miles. This schedule, followed by most vehicle manufacturers, allows for better tracking of your vehicle's maintenance history. Adhering to these service intervals is crucial for maintaining your vehicle's performance and longevity.

It is important to regularly monitor and maintain the levels of several key fluids in your vehicle. These include engine oil, coolant, power steering fluid, brake fluid, and windshield washer fluid. Regular checks of these fluids can help prevent potential issues and ensure optimal vehicle performance.

Consider replacing your car's battery when you notice signs of deterioration. These indicators may include slow engine starting, dimming headlights, or electrical components functioning erratically. Regular battery checks can help identify these issues before they lead to unexpected breakdowns.

In maintenance management, repairs are typically categorized into three main types based on their nature and purpose. These categories are: emergency repairs, which address sudden, critical issues; routine maintenance, which involves regular, scheduled upkeep; and major overhauls or capital repairs, which are extensive, planned renovations or replacements.

Tire replacement is necessary when you observe excessive or uneven wear, cracks, bulges, or discoloration. Additionally, tires should be replaced when the tread depth approaches the legal minimum of 2/32 inch. It is advisable to check your tire pressure at least monthly or before embarking on long trips to ensure optimal performance and safety.

The correct tire pressure for your vehicle can be found in two places: the owner's manual or on a sticker typically located on the driver's side doorjamb. Maintaining proper tire pressure is essential for optimal vehicle performance, fuel efficiency, and tire longevity.

Tire rotation is a maintenance procedure that involves repositioning the tires on your vehicle. This process helps distribute wear more evenly across all tires, potentially extending their lifespan and ensuring more consistent wear patterns.

Regular tire rotation is indeed recommended for most vehicles. Typically, this service should be performed every 6,000 to 8,000 miles, or as specified by your vehicle manufacturer. Adhering to this schedule can help maximize tire life and maintain optimal vehicle performance.

Several factors can cause a vehicle's heater to blow lukewarm air. Common culprits include a clogged heater core, low coolant levels, or a malfunctioning heater control valve. If you experience this issue, it's recommended to have your vehicle's heating system inspected by a qualified technician.