Choosing the right oil for your GR86 is critical for its FA24D engine, which is known for high revs and potential oil starvation on track. We researched manufacturer specifications, industry standards like API SP and ILSAC GF-6, and aggregated owner feedback from forums and reviews to compare the top oils. This guide breaks down the best options for street driving, autocross, and track use, with honest limitations for each.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Motul 300V 0W-20 Best for Track Use 100% Synthetic Ester, 0W-20, API SP/SN, JASO MA2 |
9.0 | 🛒 Check Price |
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Pennzoil Platinum 0W-20 Best Overall Value Full Synthetic 0W-20, API SP, ILSAC GF-6, dexos1 Gen 2 |
8.7 | 🛒 Check Price |
 |
Mobil 1 Advanced Fuel Economy 0W-20 Best Fuel Economy Full Synthetic 0W-20, API SP, ILSAC GF-6, dexos1 Gen 2 |
8.4 | 🛒 Check Price |
 |
Castrol EDGE 0W-20 Best for High Mileage Full Synthetic 0W-20, API SP, ILSAC GF-6, Titanium Fluid Technology |
8.1 | 🛒 Check Price |
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Liqui Moly Molygen 0W-20 Best for Wear Protection Full Synthetic 0W-20, API SP, ILSAC GF-6, Molybdenum additive |
7.8 | 🛒 Check Price |
 |
Valvoline Advanced Full Synthetic 0W-20 Best for Daily Driving Full Synthetic 0W-20, API SP, ILSAC GF-6, dexos1 Gen 2 |
8.0 | 🛒 Check Price |
 |
Royal Purple High Performance 0W-20 Best for Engine Cleanliness Full Synthetic 0W-20, API SP, ILSAC GF-6, Synerlec additive technology |
7.3 | 🛒 Check Price |
1. Motul 300V 0W-20: Best for Track Use
Our evaluation shows the Motul 300V is the top choice for GR86 owners who frequently track their cars. Based on owner feedback and the spec sheets, this ester-based oil maintains viscosity and protection even under extreme heat and sustained high RPMs, crucial for the FA24 engine’s oiling challenges on track. It meets API SP and JASO MA2 standards, ensuring compatibility with the engine’s timing chain and variable valve timing.
However, this oil is not ideal for street-only use. Its high price and need for frequent changes (every 3,000-5,000 miles on track) make it overkill for daily driving. Owners who primarily commute or do light spirited driving should consider a more cost-effective synthetic like the Pennzoil or Mobil 1 options. The 300V is for those who prioritize maximum performance and protection at the limit.
- Ester-based formulation for extreme high-temperature stability and film strength.
- Designed for racing and high-performance engines; exceeds OEM requirements.
- Reduces friction and wear during sustained high-RPM operation.
Pros: Exceptional thermal stability and wear protection under track conditions.; Improves engine response and power delivery in high-RPM range.
Cons: Short drain intervals recommended (track use); not cost-effective for daily driving.
2. Pennzoil Platinum 0W-20: Best Overall Value
For most GR86 owners, the Pennzoil Platinum is the sweet spot. We researched its specifications and compared it to the OEM fill; it meets API SP and ILSAC GF-6, which are the latest standards for protection against LSPI and timing chain wear. Owner feedback on forums consistently praises its reliability for daily driving and spirited back-road runs. The natural gas-to-liquid base oil provides excellent purity and thermal stability for the price.
Where this oil falls short is sustained track use. In our evaluation based on owner reports, some users experienced higher oil temperatures and viscosity breakdown during 20-minute track sessions. For those who only do the occasional autocross or canyon run, this is still a great choice. But if you plan multiple track days per month, step up to the Motul 300V or a 5W-30 alternative for added protection.
- PurePlus technology converts natural gas into high-quality base oil.
- Excellent protection against low-speed pre-ignition (LSPI) and timing chain wear.
- Meets Subaru and Toyota OEM specifications for the FA24 engine.
Pros: Outstanding value for a full synthetic that meets all OEM specs.; Widely available and often on sale; good for daily driving and occasional autocross.
Cons: Not ideal for extended track sessions; may thin out under extreme heat.
3. Mobil 1 Advanced Fuel Economy 0W-20: Best Fuel Economy
If your GR86 is primarily a daily driver and you care about maximizing fuel economy, the Mobil 1 Advanced Fuel Economy is a solid pick. We compared its specs to standard Mobil 1 and found it uses a lower-viscosity formulation that reduces parasitic drag. Owner feedback indicates a small but measurable improvement in MPG, especially in city driving. It meets API SP and ILSAC GF-6, so it provides adequate protection for the FA24 under normal loads.
However, this oil is not for aggressive driving. Based on our evaluation of owner reports, those who pushed their GR86 on track or during autocross saw oil temperatures spike and viscosity drop faster than with the standard Mobil 1 or Pennzoil Platinum. If you occasionally rev to redline but don’t track, it’s fine. But for any performance driving beyond spirited street use, choose a more durable oil like the Pennzoil Platinum or Motul.
- Formulated to reduce friction and improve fuel economy by up to 2% vs. conventional.
- Excellent cold-start protection with low viscosity at low temperatures.
- Meets OEM requirements for the GR86 and many other modern engines.
Pros: Noticeably better fuel economy for daily commuters.; Reliable protection for normal driving conditions and mild spirited driving.
Cons: Not recommended for track use; high shear may reduce viscosity quickly.
4. Castrol EDGE 0W-20: Best for High Mileage
Castrol EDGE is a well-regarded full synthetic that we researched for its Titanium Fluid Technology, which claims to increase film strength under pressure. For GR86 owners with higher mileage or those who want extra added security, this oil offers strong protection. Owner feedback on forums indicates it maintains viscosity well during spirited driving and has good cleaning properties to keep engines free of sludge.
However, for a new GR86 used primarily for daily commuting, the Castrol EDGE may be overkill compared to the Pennzoil Platinum or Mobil 1. It also doesn’t provide the same extreme heat protection as the Motul 300V for track use. We recommend this oil if your GR86 has over 60,000 miles or if you prefer a premium synthetic with a strong additive package. Otherwise, the Pennzoil offers similar performance at a better value.
- Titanium-based additive technology strengthens oil film under pressure.
- Excellent high-temperature stability and deposit control.
- Meets OEM specifications and is recommended by many Subaru/Toyota dealers.
Pros: Strong film strength for high-RPM protection.; Good choice for higher-mileage engines (over 60k miles) to reduce wear.
Cons: Slightly higher price than comparable synthetics without clear advantage for daily driving.
5. Liqui Moly Molygen 0W-20: Best for Wear Protection
Liqui Moly Molygen is a niche choice that we evaluated for its high molybdenum content, which provides exceptional anti-wear properties. For GR86 owners who are concerned about the engine’s known oil starvation issues on track, this oil’s film strength may offer extra protection. Owner feedback on specialty forums praises its performance in high-stress conditions, though it’s less commonly used than Motul or Pennzoil.
The main drawbacks are cost and availability. It’s significantly pricier than Pennzoil Platinum and often must be ordered online. For daily driving, the benefits are marginal and not worth the premium. We recommend this oil for owners who track their car regularly but want an alternative to Motul, or for those who simply want the best possible wear protection regardless of cost. For most, the Pennzoil or Castrol EDGE will suffice.
- Molybdenum-based additive reduces friction and wear, especially in high-load conditions.
- Green dye helps detect leaks easily.
- Meets OEM specifications for Subaru and Toyota engines.
Pros: Excellent wear protection for the FA24's high-revving nature.; Unique green color makes leak detection simple.
Cons: More expensive than many competitors; not widely available in stores.
6. Valvoline Advanced Full Synthetic 0W-20: Best for Daily Driving
Valvoline Advanced Full Synthetic is a budget-friendly option that we researched and found to meet all the necessary specifications for the GR86. It’s API SP and ILSAC GF-6 certified, so it provides adequate protection against LSPI and timing chain wear. Owner feedback on general automotive forums indicates it’s a reliable choice for daily driving, with many reporting good oil analysis results at 5,000-mile intervals.
However, this oil is not designed for performance driving. In our evaluation, it lacks the high-temperature stability of premium synthetics like Motul or even Pennzoil Platinum. If you only drive your GR86 on the street and rarely exceed 4,000 RPM, this is a solid, cost-effective choice. But if you enjoy canyon carving or autocross, we recommend spending a bit more on the Pennzoil Platinum for better protection.
- Excellent thermal and oxidation stability for extended drain intervals.
- Meets the latest API SP standard for LSPI and timing chain protection.
- Affordable price point for a full synthetic oil.
Pros: Great value for a full synthetic that meets all OEM specs.; Reliable for daily commuting and occasional spirited driving.
Cons: Not ideal for track use; may not hold up under sustained high RPMs.
7. Royal Purple High Performance 0W-20: Best for Engine Cleanliness
Royal Purple is a well-known brand that we researched for its Synerlec additive technology, which claims to reduce friction and keep engines clean. For GR86 owners who have a used car or want to ensure long-term cleanliness, this oil can help. Owner feedback on forums is mixed: some praise its smoothness, while others note it shears down faster than expected in the FA24 engine.
In our evaluation, Royal Purple is a decent choice but not the best value. It costs more than Pennzoil Platinum and Valvoline Advanced, yet doesn’t offer superior protection for track use. We recommend it only if you prioritize engine cleanliness and are willing to pay a premium. For most GR86 owners, the Pennzoil Platinum or Mobil 1 will provide similar or better performance at a lower cost.
- Proprietary Synerlec additive package reduces friction and deposits.
- Excellent detergent properties keep engines clean over time.
- Meets OEM specifications and is popular among enthusiasts.
Pros: Good cleaning ability; helps remove existing sludge.; Smooth engine operation and quiet valve train.
Cons: Higher price than many competitors without significant performance advantage for the GR86.
Frequently Asked Questions
What oil weight does the GR86 require?
Subaru and Toyota recommend 0W-20 for the GR86’s FA24 engine for optimal fuel economy and cold-start protection. Some owners switch to 5W-30 for track use to improve high-temperature viscosity, but this may void the warranty. Always check your owner’s manual and consider your driving conditions.
Can I use 5W-30 in my GR86?
Yes, many track-oriented owners use 5W-30 for better high-temperature protection. However, it may slightly reduce fuel economy and cold-start performance. Subaru/Toyota does not recommend it for normal driving, and using it could affect warranty claims. If you track your car, a high-quality 5W-30 like Motul 300V 5W-30 is a popular choice.
How often should I change the oil in my GR86?
For daily driving, Subaru recommends every 6,000 miles or 6 months. For severe driving (track, autocross, extreme temperatures), many owners change every 3,000-4,000 miles. Always follow the maintenance schedule in your owner’s manual and consider oil analysis for extended intervals.
Is synthetic oil required for the GR86?
Yes, the GR86 FA24 engine requires full synthetic 0W-20 oil that meets API SP or ILSAC GF-6 standards. Conventional oil does not provide adequate protection for this high-revving, direct-injection engine. Using non-synthetic oil can lead to increased wear and potential engine damage.
What is the best oil for track days?
For track use, we recommend Motul 300V 0W-20 or 5W-30 due to its ester-based formulation that resists thermal breakdown. Alternatively, Pennzoil Platinum 0W-20 is a good budget option for light track use. Avoid fuel economy oils like Mobil 1 AFE for track days as they may thin out quickly.
Our Verdict
After researching and comparing specs and owner feedback, our top pick for the best oil for the GR86 is the Pennzoil Platinum 0W-20 for its excellent balance of protection, value, and availability. For dedicated track use, the Motul 300V 0W-20 is the runner-up due to its superior high-temperature stability. Choose based on your driving habits: daily driving favors Pennzoil, while frequent track days warrant Motul.
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