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8 Best Subaru Full Synthetic Oils 2026 in the United States

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#1

Winner

Genuine SUBARU Forester Outback Impreza Oil Change Kit Filter Gasket & 6 Qts Synthetic Motor Oil SAE 0W-20 2011-2022 NON TURBO

This Subaru Genuine Oil Change Kit is designed specifically for Subaru vehicles like Forester, Outback, Impreza, Crosstrek, Legacy, and Ascent from model years 2011 to 2024. It includes 6 quarts of full synthetic 0W-20 motor oil, along with the correct oil filter and gasket, ensuring a proper fit and easy installation. The 0W-20 viscosity is ideal for modern Subaru engines, offering good cold start performance and consistent protection in a variety of temperatures.

Being a genuine Subaru product, it meets the manufacturer’s recommendations and fits well with the OEM specifications, which means it’s a reliable choice for maintaining your Subaru engine's health and warranty compliance. Users generally rate it highly, appreciating the convenience of getting oil and filter together in one kit.

This kit is tailored mainly for non-turbo 4-cylinder models; if you have a turbocharged engine or a different viscosity requirement, this may not be the right option. While it’s a bit heavier and pricier than generic oils, the peace of mind from using Subaru-approved parts can outweigh those factors. This kit is well suited for Subaru owners who want an easy, trusted oil change solution that matches factory specs without the guesswork.

#2

Subaru 75W90 Extra S Gear & Transmission Fluid - 5 Quart Bottles Sti WRX Genuine SOA427V1700 X5

The Subaru 75W90 Extra S Gear & Transmission Fluid is specifically designed for manual transmissions, making it a suitable choice for Subaru WRX and STI models. Its viscosity grade of 75W90 ensures it performs well in a range of temperatures, providing smooth shifting and protecting gear components.

This product is genuine Subaru, which means it meets all OEM recommendations for Subaru vehicles, ensuring compatibility and high performance. The 5-quart bottles make it convenient, especially since the previous 5-gallon pails are no longer available. This is particularly beneficial for those maintaining their vehicles at home or in smaller workshops.

This gear oil is best suited for Subaru owners with manual transmissions looking for a reliable, manufacturer-approved option.

#3

Subaru Synthetic Motor Oil SAE 0W-20 5 Quart Container SOA427V1325 Oem Genuine

The Subaru Synthetic Motor Oil SAE 0W-20 5 Quart Container (SOA427V1325) is a strong performer in the synthetic oil category, particularly for Subaru vehicle owners. Its 0W-20 viscosity grade makes it suitable for modern engines requiring low-viscosity oil, providing excellent cold-start performance and fuel efficiency.

This oil is specifically recommended for a range of Subaru models from 2017 to 2024, including Ascent, XV Crosstrek, Forester, Impreza, Outback, Legacy, and WRX, ensuring it meets OEM standards and requirements for these vehicles. The oil's additive package is designed to protect engine parts, reduce wear, and maintain engine cleanliness, contributing to longevity and reliability.

This product is best suited for Subaru owners who want OEM-recommended oil to ensure optimal performance and protection for their vehicles. It might not be the most cost-effective option compared to other brands offering synthetic oils with similar specifications.

Buying Guide for the Best Subaru Full Synthetic Oils

Choosing the right full synthetic oil for your Subaru is crucial for maintaining the performance and longevity of your vehicle's engine. Synthetic oils are designed to provide better protection and efficiency compared to conventional oils. When selecting the best synthetic oil, it's important to understand the key specifications and how they align with your driving habits and vehicle requirements. Here are the key specs to consider and how to navigate them:
Viscosity GradeViscosity grade refers to the oil's thickness and its ability to flow at different temperatures. It's important because it affects how well the oil can protect your engine under various operating conditions. Viscosity is usually represented by a number followed by 'W' (for winter) and another number (e.g., 5W-30). The first number indicates the oil's flow at cold temperatures, while the second number indicates its flow at normal engine operating temperatures. For most Subaru vehicles, a 5W-30 or 0W-20 oil is recommended. Choose the viscosity grade that matches your vehicle's requirements and your local climate.
API CertificationThe American Petroleum Institute (API) certification ensures that the oil meets specific quality and performance standards. This is important because it guarantees that the oil will provide adequate protection and performance for your engine. Look for oils with the API 'SN' or 'SP' rating, as these are the latest standards and offer the best protection. Always check your Subaru's owner's manual for the recommended API certification.
Additive PackageAdditives are chemicals added to the oil to enhance its performance. They can include detergents, dispersants, anti-wear agents, and antioxidants. These additives are important because they help keep the engine clean, reduce wear, and prevent oxidation. Different oils have different additive packages, so it's important to choose one that matches your driving conditions. For example, if you do a lot of stop-and-go driving, look for oils with strong anti-wear and detergent additives.
OEM RecommendationsOriginal Equipment Manufacturer (OEM) recommendations are the specifications provided by Subaru for the best oil to use in their vehicles. These recommendations are important because they are based on extensive testing and are designed to ensure optimal performance and longevity of your engine. Always refer to your Subaru's owner's manual for the recommended oil type and specifications. Using an oil that meets or exceeds these recommendations will help maintain your vehicle's warranty and performance.
Synthetic Base Oil TypeSynthetic oils can be made from different types of base oils, such as Group III, Group IV (PAO), and Group V (esters). The base oil type is important because it affects the oil's performance characteristics, such as stability, volatility, and lubricity. Group IV and V oils generally offer better performance but can be more expensive. For most Subaru owners, a high-quality Group III synthetic oil will provide excellent protection and performance. However, if you drive in extreme conditions or want the best possible protection, consider a Group IV or V oil.

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