Proper oil changes are essential to keeping your 2023 Subaru Forester running efficiently and reliably. With a powerful 2.5L engine and advanced features, this vehicle is designed to deliver a smooth, dependable performance. To maintain its peak condition, using the right oil type, adhering to the correct oil capacity, and following the appropriate oil change intervals are key. Let’s break down everything you need to know so you can keep your Forester in great shape.
Technical Specifications of the 2023 Subaru Forester
Your 2023 Subaru Forester is equipped with a robust 2.5L four-cylinder Boxer engine. This engine delivers 182 horsepower at 5,800 RPM and produces a torque of 176 lb-ft at 4,400 RPM. It features a double overhead camshaft (DOHC) design with 16 valves and variable valve timing, offering enhanced efficiency and performance.
As an all-wheel-drive (AWD) vehicle, the Forester is built for stability and traction in a variety of road conditions. These technical specs play a critical role in determining the type of oil you should use. Since the engine operates at a high level of efficiency while generating significant power, the correct oil prevents wear, minimizes heat, and ensures smooth operation.
Essential Oil Change Information
To maintain engine health and get the best performance out of your 2023 Subaru Forester, you need to focus on three main factors: oil type, oil capacity, and oil change interval.
Oil Type
The recommended oil type for the 2023 Subaru Forester is 0W-20 synthetic motor oil. Synthetic oil provides better lubrication and protection for high-performing engines like the Forester’s Boxer engine. It’s engineered to withstand extreme temperatures, reduce deposits inside the engine, and improve overall efficiency.
Oil Capacity
The engine oil capacity of the 2023 Subaru Forester, including the oil filter, is 4.4 quarts (approximately 4.2 liters.) Always confirm the measurement during an oil change to avoid underfilling or overfilling, as both can harm engine performance.
Oil Change Interval
Subaru recommends changing the oil every 6,000 miles or six months, whichever comes first. However, factors such as driving habits and conditions can impact this interval. If you frequently drive in stop-and-go traffic, tow heavy loads, or operate in extreme weather conditions, consider changing the oil more regularly. For the most accurate interval tailored to your driving style, an oil analysis can offer valuable insights.
Synthetic vs. Conventional Oil: Which is Better?
Synthetic Oil
- Durability: Lasts longer under high-pressure and extreme temperature conditions.
- Consistency: Molecules are uniform, leading to reduced friction and better performance.
- Efficiency: Promotes fuel efficiency and cleaner engine operation.
Conventional Oil
- Cost: Usually more affordable upfront.
- Durability: Less effective in extreme conditions due to impurities.
- Maintenance: Requires frequent oil changes compared to synthetic options.
For a vehicle like the Subaru Forester, synthetic oils are ideal because they align well with the engine’s high-performance and low-maintenance needs.

Product Comparisons for 2023 Subaru Forester
AMSOIL Signature Series 0W-20 Synthetic Motor Oil
- Pros:
- Provides superior engine protection against wear.
- Cleans the engine more effectively, reducing deposits.
- Offers extended oil change intervals due to its durability.
- Cons:
- Higher price compared to standard oils.
- Best For: Drivers seeking long-term performance and fewer oil changes.
Lucas Oil Products Synthetic API SP 0W-20 Motor Oil
- Pros:
- Maintains excellent engine cleanliness.
- Provides good high-temperature stability.
- More affordable than some premium synthetic brands.
- Cons:
- May not match the extended protection of AMSOIL in extreme conditions.
- Best For: Budget-conscious owners who still want reliable synthetic oil.
Both oils meet the needs of the 2023 Forester, but AMSOIL may be a better fit if you prioritize extended intervals and maximum engine protection.
Frequently Asked Questions
What is the best oil type for the 2023 Subaru Forester?
The best oil type for the 2023 Subaru Forester is 0W-20 full synthetic oil. It ensures better lubrication, reduces engine wear, and enhances fuel efficiency.
How often should the oil be changed in the Forester?
The oil should be changed every 6,000 miles or six months. Adjust this interval based on your driving conditions for optimal performance.
Does switching to synthetic oil improve performance?
Yes, synthetic oil improves performance by protecting the engine against wear, maintaining cleaner internal components, and providing more consistent lubrication in extreme conditions. For a detailed review of the 2023 Subaru Forester’s performance and features, click here to explore more from MotorTrend.

Final Thoughts
Taking care of your 2023 Subaru Forester starts with paying attention to its oil needs. By using the correct oil type, maintaining the recommended capacity, and following the proper change intervals, you’ll keep your engine running smoothly while extending its lifespan. Synthetic oils, particularly high-quality options like AMSOIL and Lucas Oil, enhance durability and save costs in the long run.
Routine maintenance helps ensure your Forester delivers the reliable performance and efficiency it’s designed for. Stick to these guidelines, and your vehicle will be ready for adventures for years to come. For more details on high-performance motor oils, explore Lucas Oil here and AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil here.