2017 Subaru WRX oil capacity and type are crucial details for any owner looking to maintain their high-performance turbocharged vehicle effectively. Understanding and adhering to the manufacturer’s specifications for lubrication is paramount to ensuring the longevity, reliability, and exhilarating performance that the WRX is known for. The 2017 model year features Subaru’s potent FA20DIT (Direct Injection Turbocharged) engine, an engineering marvel that demands specific attention when it comes to its lifeblood – the engine oil.
Understanding Your 2017 WRX Engine (FA20DIT)
The 2017 Subaru WRX comes equipped with a 2.0-liter horizontally opposed (Boxer) four-cylinder engine, producing 268 horsepower and 258 lb-ft of torque. This engine’s direct injection system and twin-scroll turbocharger are key to its impressive power delivery and efficiency. However, these advanced features also place unique demands on the engine oil. Turbocharged engines generate significantly more heat, and direct injection engines can be susceptible to Low-Speed Pre-Ignition (LSPI) – a phenomenon that can cause severe engine damage. Therefore, using the correct oil type and capacity isn’t just a recommendation; it’s a necessity for protecting your investment.
The Critical 2017 Subaru WRX Oil Capacity
Getting the oil level right is just as important as using the correct type.
For the 2017 Subaru WRX with the FA20DIT engine, the recommended oil capacity is 5.4 US Quarts (5.1 Liters) when changing the oil and replacing the oil filter.
It’s vital to measure this accurately:
Underfilling can lead to insufficient lubrication, increased friction, higher engine temperatures, and accelerated wear on critical components. This can quickly lead to costly engine damage.
Overfilling can be equally detrimental. Excess oil can be whipped into a froth by the crankshaft, leading to aeration. Aerated oil doesn’t lubricate as effectively, reducing oil pressure and potentially damaging the engine. It can also cause oil to leak from seals or be forced into the PCV system, leading to smoke and potentially damaging catalytic converters.
Always double-check the oil level using your WRX’s dipstick after adding the specified amount and running the engine briefly, then letting it sit for a few minutes on a level surface. The oil level should fall between the “L” (Low) and “F” (Full) marks.
Choosing the Right Oil Type for Your 2017 Subaru WRX
This is arguably the most critical aspect of engine maintenance for your WRX.
The manufacturer’s recommendation for the 2017 Subaru WRX FA20DIT engine is:
Viscosity: 5W-30 Full Synthetic
API Classification: SN PLUS or SP (or equivalent)
ILSAC Classification: GF-5 or GF-6 (or equivalent)
Let’s break down what these specifications mean:
Recommended Viscosity: 5W-30 Full Synthetic
5W-30: This “W” multi-grade oil indicates its viscosity properties. The “5W” refers to its cold-start performance (“W” for winter). A lower number here means the oil flows more easily at colder temperatures, allowing for quicker lubrication upon startup, which is when most engine wear occurs. The “30” refers to its viscosity at operating temperature. A higher number indicates thicker oil at hot temperatures, providing a more robust lubricating film. 5W-30 strikes an excellent balance for the WRX’s operating conditions, providing protection both during cold starts and under the high temperatures generated by the turbocharged engine.
Full Synthetic: This is non-negotiable for the FA20DIT engine. Full synthetic oils are engineered from higher-quality base oils and additives, offering superior performance compared to conventional or synthetic blend oils. They provide:
Better thermal stability: Resists breakdown at the high temperatures common in turbocharged engines.
Superior wear protection: Forms a more robust lubricating film, reducing friction and wear.
Cleaner engine: Less prone to sludge and deposit formation, keeping engine components clean.
Improved cold weather performance: Flows better at low temperatures, ensuring rapid lubrication.
API and ILSAC Ratings: Protection Against LSPI
API SN PLUS or SP: These classifications from the American Petroleum Institute indicate the oil meets specific performance standards. SN PLUS was introduced specifically to address Low-Speed Pre-Ignition (LSPI) in turbocharged, direct-injection engines. SP is the latest standard, offering even greater protection against LSPI, timing chain wear, and improved fuel economy.
ILSAC GF-5 or GF-6: The International Lubricant Standardization and Approval Committee’s GF-5 standard also focused on LSPI protection, fuel economy, and emissions. GF-6, the newer standard, builds upon this with even stricter requirements for engine protection, fuel efficiency, and durability for modern engines.
Using an oil that meets these specific API and ILSAC standards is absolutely essential for your 2017 WRX to mitigate the risk of LSPI, which can cause catastrophic damage to pistons and connecting rods.
Don’t Forget the Oil Filter
Alongside the correct oil, a high-quality oil filter is paramount. The filter’s job is to trap contaminants, metal particles, and sludge, preventing them from circulating through the engine. For your 2017 WRX, always opt for a reputable brand.
OEM Subaru Oil Filter: This is generally the safest bet, as it’s designed specifically for your engine by the manufacturer.
High-Quality Aftermarket Filters: Brands like Wix, Mann-Filter, Bosch, or K&N offer excellent filtration and construction. Avoid cheap, generic filters, as they may not filter effectively or withstand the demands of your WRX’s engine, potentially leading to premature engine wear.
Recommended Oil Change Intervals
Subaru generally recommends changing the oil in your 2017 WRX every 6,000 miles (approximately 10,000 km) or every 6 months, whichever comes first. However, this is a general guideline. Your driving habits and environmental conditions can influence the ideal interval:
Severe Duty: If you frequently engage in spirited driving, track days, frequent short trips, driving in extreme hot or cold temperatures, or dusty conditions, consider shortening your oil change interval to 3,000-4,000 miles or every 3-4 months. The FA20DIT engine, especially when driven hard, benefits from more frequent fresh oil.
Oil Analysis: For those who want precise data, an oil analysis can tell you exactly how your oil is performing and when it’s truly due for a change.
Why Proper Oil Maintenance is Non-Negotiable
Adhering to the correct 2017 Subaru WRX oil capacity and type is not just about following instructions; it’s about safeguarding your vehicle’s performance and longevity.
Engine Longevity and Reliability: Proper lubrication minimizes friction and wear, extending the life of crucial engine components like bearings, pistons, and camshafts.
Maintaining Performance and Fuel Efficiency: Clean, correctly specified oil allows the engine to operate at peak efficiency, maintaining horsepower, torque, and optimal fuel economy.
Protecting Your Investment and Warranty: Regular, documented oil changes with the correct specifications are often a requirement to keep your vehicle’s warranty valid.
DIY Oil Change vs. Professional Service
Changing your own oil can be a rewarding experience for the DIY enthusiast. It allows for direct control over the products used and can save on labor costs. However, it requires proper tools, disposal methods for used oil, and a good understanding of the process. If you’re not comfortable with automotive maintenance or lack the necessary equipment, entrusting your WRX to a certified Subaru technician or a reputable independent shop is always a wise choice. They have the expertise, specialized tools, and knowledge to ensure the job is done correctly.
Conclusion
The 2017 Subaru WRX is a precision-engineered machine that thrives on meticulous care. By diligently using the recommended 5W-30 Full Synthetic oil that meets API SN PLUS/SP and ILSAC GF-5/GF-6 standards, maintaining the precise 5.4 US Quarts (5.1 Liters) capacity with a quality oil filter, and adhering to appropriate change intervals, you’re ensuring your FA20DIT engine delivers its renowned performance and reliability for years to come. Don’t compromise on oil quality; it’s the simplest yet most effective way to protect your turbocharged beast.
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Source:
* 2017 Subaru WRX Owner’s Manual