7 Best Subaru Full Synthetic Oils 2025 in the United States

The Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil is a high-quality option for those needing full synthetic oil for their Subaru. Its 5W-30 viscosity grade is suitable for a wide range of temperatures, making it versatile for various driving conditions. This oil meets or exceeds several important API certifications, including API SP, API SN with SN Plus, and GM dexos 1 Gen 3, ensuring it adheres to industry standards for engine protection and performance.

Additionally, it features an advanced additive package that provides 40% better wear protection and 25% better deposit protection compared to industry standards, which helps in prolonging engine life by reducing wear, friction, heat, and deposits. The synthetic base oil type offers robust protection against contaminants, promising up to 24 times stronger protection against engine-killing elements than leading competitors.

Valvoline has a long-standing reputation, and the product is made in the USA, adding to its reliability. However, it’s worth noting that it might be more expensive compared to conventional oils, and the case of 3 package may be more than needed for some users. This motor oil is an excellent choice for those seeking dependable and advanced protection for their Subaru engines.

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.

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.