The Subaru Forester is known for its reliability, all-wheel drive system, and long-lasting performance. One of the key factors in keeping it running smoothly is proper transmission fluid maintenance. Whether you own an older Forester with a manual gearbox or a newer model with a CVT, knowing the correct transmission fluid capacity and type is essential. This guide covers Subaru Forester transmission fluid capacity across generations, the recommended fluid types, and the best products available.
Quick Facts
- 1998–2008 Subaru Forester: 4-speed automatic or 5-speed manual
- 4-speed automatic: ~9.8 quarts (ATF)
- 5-speed manual: ~3.7 quarts (gear oil 75W-90)
- 2009–2013 Subaru Forester: 4-speed automatic or 5/6-speed manual
- Automatic: ~9.8–10.0 quarts (ATF-HP)
- Manual: ~3.7–4.0 quarts (75W-90)
- 2014–2018 Subaru Forester: CVT (Lineartronic) or 6-speed manual
- CVT: ~12.0 quarts (Subaru CVTF-II)
- Manual: ~4.0 quarts (75W-90)
- 2019–Present Subaru Forester: CVT only
- CVT: ~12.0–13.0 quarts (Subaru CVTF-II or CVTF-III)
Recommended Transmission Fluids
- Subaru ATF-HP – For older 4-speed automatic Foresters (pre-2014).
- Subaru CVTF-II – Required for 2014–2018 Forester CVT transmissions.
- Subaru CVTF-III – Recommended for 2019+ Foresters with CVT.
- Valvoline SynPower 75W-90 Full Synthetic Gear Oil – For manual transmission models.
- Valvoline ATF Full Synthetic – Licensed alternative for older automatic Foresters.
Buyer’s Guide: Choosing the Right Fluid
Here are the key considerations when choosing transmission fluid for your Forester:
- OEM Specification: Always use Subaru-specified CVTF or ATF to ensure compatibility.
- Model Year: Older Foresters (1998–2013) use ATF-HP, while 2014+ models require CVTF-II or CVTF-III.
- Manual vs. Automatic: Manuals use 75W-90 gear oil, while automatics and CVTs require specific Subaru ATF or CVTF.
- Fluid Change Interval: Subaru recommends checking fluid regularly; CVTs often require service every 60,000 miles under severe use.
- Capacity: A drain & fill replaces only part of the total capacity; a full flush requires the full 9–13 quarts depending on model.
Detailed Product Reviews
Subaru ATF-HP
Who it’s for: Owners of 1998–2013 Foresters with 4-speed automatic transmissions.
- Key Benefits: OEM-approved, smooth shifting, protects against wear.
- Pros: Designed specifically for Subaru automatics, reliable.
- Cons: Limited to older models only.
Final Verdict: The safest choice for older Subaru automatic transmissions. Check price on Amazon
Subaru CVTF-II
Who it’s for: 2014–2018 Subaru Forester CVT owners.
- Key Benefits: OEM fluid, ensures proper CVT operation, long-lasting performance.
- Pros: Warranty-approved, designed for CVT technology.
- Cons: Expensive compared to aftermarket options.
Final Verdict: Required fluid for mid-generation Forester CVTs. Check price on Amazon
Subaru CVTF-III
Who it’s for: 2019+ Forester CVT models.
- Key Benefits: Improved CVT protection, designed for newer transmissions.
- Pros: OEM-approved, high-performance protection.
- Cons: Limited aftermarket alternatives.
Final Verdict: The only safe choice for new-generation Subaru CVTs. Check price on Amazon
Valvoline SynPower 75W-90
Who it’s for: Forester owners with manual transmissions.
- Key Benefits: Full synthetic gear oil, excellent wear protection, great for cold starts.
- Pros: Affordable, trusted brand, wide compatibility.
- Cons: Not for CVT or automatic models.
Final Verdict: Perfect for Forester manual transmission models. Check price on Amazon
Comparison Table
| Model Year | Transmission | Capacity | Fluid Type | Amazon Link |
|---|---|---|---|---|
| 1998–2013 | 4-speed automatic | ~9.8–10.0 quarts | Subaru ATF-HP | View Price |
| 1998–2013 | 5-speed manual | ~3.7–4.0 quarts | 75W-90 Gear Oil | View Price |
| 2014–2018 | CVT | ~12.0 quarts | Subaru CVTF-II | View Price |
| 2014–2018 | 6-speed manual | ~4.0 quarts | 75W-90 Gear Oil | View Price |
| 2019–Present | CVT | ~12.0–13.0 quarts | Subaru CVTF-III | View Price |
FAQ
How much transmission fluid does a Subaru Forester need?
Depending on the year and transmission type, capacity ranges from 3.7 quarts (manual) to 13 quarts (CVT).
What type of transmission fluid does the Forester use?
Older models use ATF-HP, newer CVT models use CVTF-II or CVTF-III, and manuals require 75W-90 gear oil.
How often should I change transmission fluid?
Subaru recommends inspection every 30,000 miles and fluid replacement around 60,000 miles under severe conditions.
Can I use aftermarket CVT fluid in my Forester?
It’s strongly recommended to use Subaru OEM CVTF fluids to avoid CVT damage.
What happens if I overfill transmission fluid?
Overfilling can cause foaming, overheating, and shifting issues. Always check fluid level properly after servicing.
Conclusion
The Subaru Forester transmission fluid capacity varies by year and transmission type, ranging from 3.7 quarts in manuals to 13 quarts in CVTs. For reliability, always use the recommended OEM Subaru ATF or CVTF fluids. For manuals, 75W-90 full synthetic gear oil is the best choice. Proper maintenance and timely fluid changes will keep your Forester’s transmission running smoothly for years. Shop Subaru-approved transmission fluid today.
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