Why Not Oil FAQ

Engine oil additives are specialized compounds mixed into base oils to enhance their performance. They serve various purposes, including cleaning, lubricating, and protecting engine components. Additives are crucial for maintaining engine health, longevity, and performance.

Choosing the right engine oil involves considering your vehicle's specifications, including make, model, and year. Additionally, refer to your owner's manual for oil viscosity and API service category recommendations. These factors ensure compatibility and optimal engine protection.

Viscosity is a measure of an oil's thickness or resistance to flow. It's indicated by numbers like 5W-30 or 10W-40. The 'W' stands for 'winter,' and the second number represents viscosity at operating temperatures. Choosing the correct viscosity ensures proper lubrication under various conditions.

API (American Petroleum Institute) service categories denote the quality and performance level of engine oils. For example, API SN is a common category. Refer to your owner's manual to determine the recommended API service category for your vehicle, as it aligns with your engine's requirements.

It's generally best to avoid mixing different brands or types of engine oil, as it can affect the oil's performance and potentially harm your engine. Stick to a single brand and type of oil, following the manufacturer's recommendations.

High-mileage engine oils are formulated with additives to address specific issues in older vehicles, such as reduced oil consumption and engine wear. If your vehicle has a significant number of miles on it, using a high-mileage oil might be beneficial.

Synthetic oils often have more advanced additives compared to conventional oils. They provide better performance in extreme conditions and offer superior protection against wear, oxidation, and deposits.

While some aftermarket oil additives claim to enhance performance, it's essential to be cautious. Adding aftermarket additives can sometimes disrupt the carefully balanced formula of your engine oil, potentially causing harm. Stick to high-quality oils with the necessary additives for your vehicle.

The frequency of oil changes depends on your vehicle's make and model, your driving habits, and the type of oil you use. Refer to your owner's manual for manufacturer recommendations, but a common guideline is to change your oil every 3,000 to 5,000 miles.

It's best to use engine oil specifically designed for your vehicle type. Diesel engine oils may contain different additives and properties that could be incompatible with gasoline engines and vice versa. Always follow manufacturer recommendations.