As your car ages, its engine changes. Oil consumption increases, seals wear down, and you might notice dark spots on your driveway that weren't there before. This is when switching to a high mileage motor oil becomes important. If you're driving a vehicle with over 75,000 miles, understanding your options can help you keep your engine running smoothly for years to come.

Understanding the 5W-20 Specification

The numbers on your motor oil bottle—in this case, 5W-20—tell you how the oil behaves at different temperatures. The first number, 5, refers to the oil's viscosity in cold conditions. The W stands for winter, meaning this oil flows easily when you start your car on a cold morning. The second number, 20, is the oil's viscosity at normal operating temperature.

To find which viscosity your vehicle needs, check your owner's manual. The manufacturer specifies the exact grade required for your engine. Using the wrong viscosity can affect fuel economy and engine protection, so this is worth getting right. If you can't find your manual, you can search online using your vehicle's year, make, and model.

What Makes High Mileage Oil Different

High mileage motor oil is specifically formulated to address the wear and tear that comes with age. Valvoline Full Synthetic High Mileage with MaxLife Technology includes seal conditioners designed to prevent and treat oil leaks—a common problem in older engines. As engines accumulate miles, seals become less flexible, and oil can seep past them more easily. These conditioners help restore some elasticity to aging seals.

The formula also includes enhanced detergents and additives that protect against the buildup of sludge, deposits, and corrosion. Older engines are more vulnerable to these contaminants, which can reduce horsepower and cause internal wear. A synthetic formula like this one provides more stable protection across a wider temperature range than conventional oils.

When to Make the Switch

You don't need to wait until something goes wrong. Once your vehicle crosses 75,000 miles, it's a sensible time to transition to a high mileage formula, especially if you plan to keep the car for several more years. If your engine is already consuming oil noticeably or you're seeing occasional leaks, high mileage oil can help minimize these issues.

The Valvoline Full Synthetic High Mileage 5W-20 meets API SP and ILSAC GF-6A specifications, which means it's suitable for modern engine technology. This matters if you have a newer car with higher mileage rather than an older model. The formulation is American made and comes from a brand with over 150 years of motor oil history.

Maintenance and Oil Change Intervals

Switching to high mileage oil doesn't change your basic maintenance schedule. Check your owner's manual for the recommended oil change interval—this is typically between 5,000 and 10,000 miles for synthetic oils, though some modern vehicles can go longer. Stick to your vehicle manufacturer's schedule rather than the old conventional oil wisdom of every 3,000 miles.

Keep an eye on your oil level between changes, especially in older engines that may consume more oil. A dipstick check once a month takes just a minute and can alert you to problems early. Using the right grade of motor oil, like Valvoline Full Synthetic High Mileage 5W-20, can help reduce consumption and extend your engine's life.

The 5 quart size is a standard container for most oil changes, though you should always verify your engine's capacity in your owner's manual before purchasing.

The product in this guide: Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 5W-20 Motor Oil 5 QT