Can I use 5w30 instead of 0w20 Subaru?
When it comes to maintaining your Subaru, one of the most critical aspects is choosing the right engine oil. Many Subaru owners often wonder if they can substitute 5W30 oil for the recommended 0W20. In this article, we will explore the implications of using different oil viscosities and what it means for your vehicle's performance and longevity.
Understanding Oil Viscosity Ratings
Oil viscosity ratings, such as 0W20 and 5W30, indicate the thickness of the oil at different temperatures. The first number (0W or 5W) represents the oil's viscosity at low temperatures, while the second number (20 or 30) indicates its viscosity at high temperatures. Here’s a breakdown:
- 0W20: This oil is thinner at low temperatures, allowing for easier engine starts in cold weather and better fuel efficiency.
- 5W30: This oil is slightly thicker at low temperatures, which may provide better protection in high-temperature conditions but can lead to reduced fuel efficiency.
Manufacturer Recommendations
Subaru typically recommends 0W20 oil for most of its newer models, particularly those equipped with the Boxer engine. This recommendation is based on extensive testing to ensure optimal performance, fuel efficiency, and engine longevity. Using the recommended oil helps maintain the vehicle's warranty and ensures compliance with manufacturer specifications.
Potential Consequences of Using 5W30 Instead of 0W20
While it may be tempting to use 5W30 oil, especially if it’s what you have on hand, there are several potential consequences:
- Reduced Fuel Efficiency: The thicker viscosity of 5W30 can lead to increased friction in the engine, which may reduce fuel efficiency.
- Engine Wear: Using a thicker oil than recommended can result in inadequate lubrication during cold starts, potentially leading to increased engine wear over time.
- Warranty Issues: If your Subaru is still under warranty, using an oil that does not meet the manufacturer's specifications could void your warranty.
Conclusion
In summary, while you technically can use 5W30 oil in your Subaru, it is not advisable. Sticking to the manufacturer-recommended 0W20 oil is crucial for maintaining your vehicle's performance, efficiency, and warranty. If you have any doubts or need assistance with oil changes, feel free to reach out to your trusted auto service provider for guidance.
Frequently Asked Questions
Can I put 5w30 in my Subaru?
5W-30 synthetic motor oil is required for 2011 and newer turbo-charged Subaru vehicles.”
What oil can I use instead of 0W-20?
If SAE 0W-20 synthetic oil is not available, SAE 5W-20 conventional oil may be used. However, it must be replaced with SAE 0W-20 synthetic oil at the next oil change.
What engine oil does Subaru recommend?
Most new Subaru vehicles require synthetic oil with a viscosity rating of 0W-20.
Can I put 5w30 instead of 0W-20?
Using the proper viscosity motor oil will help protect and maintain the performance of your vehicle's engine. Thus, always refer to the manufacturer's recommendation while your vehicle is under warranty. **if you have a car that recommends 0W-20, do not use 5W-30 – back # of vis-grade must match or it is a no-go.
Can I put 5W30 instead of 0W-20 on my Subaru Outback?
Oil Type & Capacity for Subaru Outback
Like the Crosstrek, the oil for the Subaru Outback needs to be an API classification SN or ILSAC GF-5. Also like the Crosstrek, the Outback engine should be filled with 0W-20 synthetic oil. If synthetic oil isn't available, you can use either 5W-30 or 5W-40 conventional oil.
Is there a big difference between 0W-20 and 5W-20 oil?
Both 0W-20 and 5W-20 have similar viscosity at operating temps, with 0W-20 being slightly thinner. The lower viscosity of 0W-20 can provide better fuel economy compared to 5W-20 due to reduced friction and drag on the engine. 0W-20 oils require synthetic base oils and are not conventional oils.
What is the best oil for a Subaru engine?
Subaru Oil Guide:
| Model | Subaru Oil Required | Capacity |
|---|---|---|
| Subaru Legacy & Outback XT (Turbo) 2020 - 2021 | 0W-20 Synthetic Oil | 4.8 Quarts |
| Subaru WRX 2002 - 2010 | 5W-30 Conventional Oil | 4.4 - 5 Quarts |
| Subaru WRX 2011 - 2020 | 5W-30 Synthetic Oil | 4.4 - 5.4 Quarts |
| Subaru Crosstrek 2013 - 2021 | 0W-20 Synthetic Oil | 4.4 - 5.1 Quarts |
What happens if you use 5W30 instead of 20?
The 5W-20, however, will remain a little thinner once you reach operating temperature to help improve fuel economy and flow fast enough to fill the tight tolerances in the engine. Using 5W-30 instead can reduce fuel economy and impede flow throughout the engine.
What oil can you use in place of OW-20?
If SAE 0W-20 synthetic oil is not available, SAE 5W-20 conventional oil may be used.
Can I use 5W-20 instead of 0W-20?
If SAE 0W-20 synthetic oil is not available, SAE 5W-20 conventional oil may be used. However, it must be replaced with SAE 0W-20 synthetic oil at the next oil change.
