Engine oils with higher API (American Petroleum Institute) grades, such as API SP, can potentially save you money in several ways:

Improved Fuel Efficiency: Engine oils with higher API grades often include advanced formulations designed to reduce friction and improve lubrication. This can lead to improved fuel efficiency, as the engine operates more smoothly and with less resistance. Over time, better fuel efficiency can save you money at the gas pump.

Extended Oil Change Intervals: Higher-quality engine oils typically offer better protection against wear and deposit formation. This may allow you to extend the time between oil changes, saving you money on oil changes and reducing the frequency of maintenance.

Longer Engine Life: API SP and similar high-grade engine oils provide superior protection for your engine components. Reduced wear and tear on engine parts can extend the overall lifespan of your vehicle, delaying the need for expensive engine repairs or replacements.

Reduced Maintenance Costs: Using high-quality engine oil can help prevent engine-related issues, such as sludge buildup or premature component wear. Avoiding these problems can lead to lower maintenance costs over the life of your vehicle.

Preservation of Engine Efficiency: Over time, engine efficiency can degrade due to wear and friction. High-grade engine oils help preserve engine efficiency by reducing these factors, which means your vehicle continues to perform optimally for longer.

Lower Emissions and Environmental Impact: Some high-API-grade engine oils are designed to reduce harmful emissions, which may help your vehicle comply with emission standards and potentially reduce penalties or fees associated with emissions violations.

Protection Against Engine Damage: High-grade engine oils provide better protection against extreme conditions, such as high temperatures and heavy loads. This can help prevent costly engine damage that may result from using lower-quality oils.

Improved Resale Value: A well-maintained vehicle with a history of using high-quality engine oil may have a higher resale value when you decide to sell or trade it in.

It's important to note that while using high-API-grade engine oil can potentially save you money in the long run, it's essential to follow your vehicle manufacturer's recommendations regarding the type and grade of engine oil to use. Using an oil that does not meet your vehicle's specifications can lead to engine damage or void warranties, which can be costly to address. Additionally, consider factors like your driving habits, vehicle age, and climate when selecting the appropriate engine oil grade for your specific needs.