Best Synthetic Oil for Scion TC Top 5 Tested 2025

As a long-time Scion TC enthusiast and owner, I’ve spent countless hours under the hood, making sure my ride performs its best. One of the most critical decisions I’ve consistently faced, and one that directly impacts engine health and longevity, is choosing the right motor oil. For our beloved Scion TCs, especially with their reliable but sometimes demanding engines, synthetic oil isn’t just a recommendation – it’s practically a necessity. I’ve been through the wringer, trying different brands and formulas, and I know how confusing it can be to pick the Best Synthetic Oil for Scion TC from the myriad of options out there. That’s why I’ve put together this hands-on guide, sharing my insights on five top-performing synthetic oils (and one crucial companion) that I’ve personally tested or seen perform exceptionally well in Scion TCs. We’ll dive deep into their features, benefits, and help you decide which one is perfect for your Scion TC.

IMAGE	PRODUCT NAME	AMAZON LINK
	Valvoline Full Synthetic High Mileage with MaxLife…	View on Amazon
	Valvoline Advanced Full Synthetic SAE 0W-20 Motor Oil 5 QT	View on Amazon
	Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil…	View on Amazon
	Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5…	View on Amazon
	FRAM Ultra Synthetic XG4967 20K Mile Change Automotive…	View on Amazon

Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 5W-30 Motor Oil 5 QT

When my Scion TC started creeping past the 75,000-mile mark, I knew it was time to consider a high-mileage specific oil, and Valvoline’s MaxLife quickly caught my eye. This oil is specifically engineered to address the unique needs of older engines. It’s not just about lubrication; it’s about conditioning seals, preventing leaks, and fighting the common wear and tear that comes with age. I’ve personally noticed a reduction in minor oil consumption and a smoother idle after switching to this formula. It truly feels like it gives older engines a new lease on life, protecting those crucial internal components from friction and buildup.

• Enhanced MaxLife Technology to prevent engine breakdown in vehicles over 75,000 miles
• Formulated with seal conditioners to prevent and treat oil leaks
• Minimizes oil consumption and maximizes engine life
• 50% better wear protection than industry standard
• 25% extra defense against deposits, sludge, corrosion, and rust
• Meets or exceeds ILSAC GF-6A, API SP, API SN with SN Plus, API SN standards
• American made and formulated by Valvoline, a trusted brand for over 150 years

Pros:
– Excellent for older engines, extending their lifespan.
– Effectively helps prevent and seal minor oil leaks.
– Superior protection against wear, deposits, and sludge.
– Reduces oil consumption in high-mileage vehicles.
– Reputable brand with a long history of quality.

Cons:
– Might be overkill for newer engines with very low mileage.
– Slightly higher price point than conventional oils, but worth the investment.

Best for: Scion TC owners with vehicles exceeding 75,000 miles who want to proactively protect their engine, reduce oil leaks, and maintain optimal performance.

User feedback summary: Owners consistently praise this oil for revitalizing their high-mileage engines, noting reduced oil consumption, quieter operation, and fewer leaks. Many trust it as their go-to for older vehicles.

Valvoline Advanced Full Synthetic SAE 0W-20 Motor Oil 5 QT

For those Scion TCs (especially later models or those where the owner’s manual specifies 0W-20), Valvoline’s Advanced Full Synthetic is a fantastic choice for comprehensive protection. I’ve seen engines running this oil stay remarkably clean and perform consistently. It’s not just about lubrication; it’s about building a robust shield against everything that can harm an engine: wear, friction, heat, and those pesky deposits. The added benefit of rust and corrosion protection is a huge plus, especially if you live in a humid climate. This oil is designed to maximize your vehicle’s life by fighting engine breakdown at its core.

• Advanced protection against wear, friction, heat, and deposits
• 24X stronger protection against water intrusion than industry-leading synthetic oils
• Fights rust, corrosion, and other threats to help maximize vehicle life
• 40% better wear protection vs. industry standards (Sequence IVB engine test)
• 25% better deposit protection with superior engine cleaning detergents (GMOD engine test)
• Meets or exceeds ILSAC GF-6A, API SP, API SN with SN Plus, API SN, GM dexos 1 Gen 3 standards
• American made and formulated by Valvoline, a trusted brand for over 150 years

Pros:
– Provides multi-faceted protection for critical engine components.
– Exceptional defense against rust and corrosion, ideal for all climates.
– Superior cleaning properties prevent harmful deposit buildup.
– Exceeds industry standards for wear and deposit protection.
– Ensures engine longevity and optimal performance.

Cons:
– 0W-20 might not be the recommended viscosity for all Scion TC model years; always check your owner’s manual.
– Premium pricing reflects its advanced protective qualities.

Best for: Scion TC owners whose vehicles recommend 0W-20 viscosity, prioritizing comprehensive, all-around engine protection, superior cleaning, and rust prevention.

User feedback summary: Users report noticeable smoothness in their engines, excellent cold start performance, and peace of mind knowing their engine is highly protected. Many praise its ability to keep engines running like new.

Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-16

When it comes to squeezing every last mile out of a gallon, Mobil 1’s Advanced Fuel Economy line is a standout. This 0W-16 formulation is specifically designed for lower viscosity, which translates directly into less internal engine drag and, ultimately, better fuel efficiency for your Scion TC if its engine is designed for this weight. Beyond the fuel savings, Mobil 1’s Triple Action Formula ensures your engine doesn’t compromise on protection or cleanliness. It’s built to maintain excellent viscosity and prevent oil breakdown even over extended oil change intervals, making it a smart choice for efficiency-minded drivers.

• Low-viscosity 0W-16 formula to help improve fuel economy
• Utilizes Mobil 1’s signature Triple Action Formula for outstanding engine performance, protection, and cleanliness
• Helps protect critical engine parts for up to 10,000 miles between oil changes
• Controls oxidation to prevent oil breakdown and maintain excellent viscosity
• Meets ILSAC GF-6 standards for low-speed pre-ignition (LSPI) and timing chain wear protection
• Helps extend engine life by preventing damaging deposits and sludge buildup

Pros:
– Significantly improves fuel economy due to its low viscosity.
– Offers extended oil change intervals (up to 10,000 miles).
– Provides robust protection against wear, LSPI, and timing chain issues.
– Keeps the engine remarkably clean, preventing sludge and deposits.
– Excellent for drivers looking to optimize efficiency and reduce maintenance frequency.

Cons:
– 0W-16 viscosity is only suitable if explicitly recommended by your Scion TC’s owner’s manual. Using the wrong viscosity can be detrimental.
– Requires careful consideration of compatibility with your specific Scion TC model year.

Best for: Scion TC owners whose vehicle’s owner’s manual specifically recommends a 0W-16 viscosity and who prioritize maximizing fuel efficiency and extending oil change intervals without sacrificing protection.

User feedback summary: Drivers often report improved gas mileage and a quiet, smooth-running engine. They appreciate the longer drain intervals, which add convenience and value.

Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 QT

For my fellow Scion TC owners with a good chunk of miles on the odometer (75,000+), but whose cars might prefer a 0W-20 viscosity, Mobil 1’s High Mileage formula is an excellent contender. This isn’t just a standard 0W-20; it’s supercharged with additives specifically for aging engines. It shares the fantastic 10,000-mile change interval with other Mobil 1 products, which is a huge convenience. What really stands out is its ability to handle extreme temperatures, providing steadfast protection whether you’re starting up in a freezing morning or cruising on a scorching afternoon. Plus, its sludge-fighting capabilities are top-notch, keeping those critical oil passages clear.

• Designed for engines with over 75,000 miles
• Goes up to 10,000 miles between oil changes
• Utilizes Mobil 1’s signature Triple Action Formula for outstanding engine performance, protection, and cleanliness
• Meets ILSAC GF-6 standards for low-speed pre-ignition (LSPI) and timing chain wear protection
• Provides excellent internal engine heat protection (up to 500°F) and low temperature protection (to -30°F)
• Specially formulated to help remove sludge and lower engine temperatures

Pros:
– Specifically tailored for high-mileage engines, extending their life.
– Offers extended drain intervals, reducing the frequency of oil changes.
– Excellent performance in extreme hot and cold temperatures.
– Actively helps remove sludge and prevents new buildup.
– Provides robust protection against LSPI and timing chain wear.

Cons:
– As with any specific viscosity, ensure 0W-20 is recommended for your Scion TC model.
– Higher cost compared to conventional oils, but justified by performance and longevity.

Best for: Scion TC owners with over 75,000 miles on the clock, whose vehicle’s owner’s manual specifies 0W-20, and who desire extended oil change intervals, superior temperature protection, and sludge removal.

User feedback summary: Many users report a noticeable improvement in engine smoothness and a reduction in oil consumption for their older vehicles. The extended drain interval is a frequently highlighted benefit for convenience.

FRAM Ultra Synthetic XG4967 20K Mile Change Automotive Replacement Engine Oil Filter

Okay, I know this isn’t an oil, but hear me out: no matter how good your synthetic oil is, its performance is severely limited if your oil filter isn’t up to the task. When you’re investing in the Best Synthetic Oil for Scion TC, you absolutely need a filter that can keep up. The FRAM Ultra Synthetic XG4967 is designed to do exactly that. It’s built for extended drain intervals, just like many synthetic oils, and its dual-layer synthetic media provides filtration that’s far superior to conventional filters. Think of it as the bodyguard for your expensive synthetic oil, ensuring it stays clean and effective for its full lifespan.

• SYNTHETIC REPLACEMENT ENGINE OIL FILTER: Perfect for consumers looking to get the most from their investment in full synthetic oil
• ULTIMATE DUAL-LAYER SYNTHETIC MEDIA: Provides up to 20,000 miles of engine protection
• Designed for all motor oil types, but optimized for synthetic
• Engineered with a silicone non-drain back valve for superior start-up engine protection and 3X the hot oil resistance
• SureGrip feature provides a nonslip surface for easier installation

Pros:
– Maximizes the performance and longevity of your synthetic oil.
– Exceptional filtration for up to 20,000 miles, matching extended oil drain intervals.
– Superior start-up protection thanks to the silicone anti-drain back valve.
– Durable construction ideal for demanding conditions.
– Easy to install with the SureGrip feature.

Cons:
– It’s an additional cost on top of the oil, though a worthwhile investment.
– May seem like overkill if you’re still using conventional oil (but you shouldn’t be for a Scion TC!).

Best for: All Scion TC owners using full synthetic motor oil who want to ensure their oil stays as clean as possible for extended periods, maximize engine protection, and avoid premature filter changes.

User feedback summary: Users consistently praise its robust construction and effective filtration, often noting that their oil stays cleaner for longer. Many consider it essential when running high-mileage synthetic oils.

Helpful Comparison Insights

When you’re sifting through options for the Best Synthetic Oil for Scion TC, it’s easy to get lost in the details. Let’s break down some key differences.

First off, we have two giants: Valvoline and Mobil 1. Both brands are incredibly reputable and offer exceptional synthetic formulations. Valvoline’s offerings, like the MaxLife High Mileage, are particularly strong for cars past the 75,000-mile mark, focusing on seal conditioning and wear prevention. Their Advanced Full Synthetic provides fantastic all-around protection, especially for rust and corrosion. Mobil 1, on the other hand, often highlights its extended drain intervals (up to 10,000 miles) and its proprietary Triple Action Formula for balanced performance, protection, and cleanliness. Their Fuel Economy line specifically targets better MPG, while their High Mileage version for older engines is just as robust.

A critical point of comparison is viscosity. We’ve looked at 5W-30, 0W-20, and even 0W-16. Your Scion TC’s owner’s manual is your best friend here. While 5W-30 is a common recommendation for many TC models, newer generations or specific engines might call for 0W-20. The Mobil 1 Advanced Fuel Economy 0W-16 is excellent for fuel savings, but only if your manual specifically allows it. Using an incorrect viscosity can harm your engine over time. Generally, a 0W-20 or 5W-30 full synthetic will be the sweet spot for most Scion TCs, offering a balance of cold start protection and high-temperature stability.

Both Valvoline and Mobil 1 oils meet or exceed the latest ILSAC GF-6A and API SP standards. This is crucial because these certifications mean they offer protection against Low-Speed Pre-Ignition (LSPI) and timing chain wear, which are important considerations for modern engines. Regardless of brand, always look for these latest certifications.

Finally, don’t forget the FRAM Ultra Synthetic Oil Filter. While not an oil, it’s an indispensable partner for any synthetic oil. You wouldn’t put premium fuel in a dirty filter, right? This filter ensures your chosen synthetic oil performs at its peak, providing long-lasting filtration and protecting your engine from contaminants for extended periods, matching the long drain intervals of many synthetic oils. It’s the unsung hero that extends the life of your synthetic oil and your engine.

Final Verdict

Choosing the Best Synthetic Oil for Scion TC boils down to your car’s mileage, the recommended viscosity from your owner’s manual, and your driving priorities.

If your Scion TC has over 75,000 miles and usually takes 5W-30, the Valvoline Full Synthetic High Mileage with MaxLife Technology is a standout choice for its dedicated approach to older engines, fighting leaks and wear. If your high-mileage TC calls for 0W-20, the Mobil 1 High Mileage Full Synthetic 0W-20 offers similar benefits with excellent temperature protection and extended drain intervals.

For a Scion TC that’s still below 75,000 miles or if you prioritize overall, robust protection and your manual specifies 0W-20, the Valvoline Advanced Full Synthetic SAE 0W-20 provides exceptional all-around defense, especially against rust and deposits.

If fuel economy is your absolute top priority and your Scion TC’s owner’s manual explicitly allows for a 0W-16 viscosity, then the Mobil 1 Advanced Fuel Economy Full Synthetic 0W-16 could offer noticeable MPG improvements. However, I can’t stress this enough: always double-check your manual for 0W-16 compatibility.

And regardless of which excellent synthetic oil you choose, pairing it with the FRAM Ultra Synthetic XG4967 Oil Filter is a smart move. It ensures your high-quality oil remains clean and effective, maximizing its life and your engine’s protection.

Ultimately, you can’t go wrong with any of these top-tier options as long as you match the oil’s specifications to your Scion TC’s requirements. Your Scion TC will thank you with smoother performance and a longer, healthier engine life!

Comprehensive FAQ Section

Q1: What is the recommended oil weight for a Scion TC?
A1: The recommended oil weight for your Scion TC can vary depending on the model year and engine. Most Scion TCs typically recommend a 5W-30 full synthetic oil, while some newer models or specific engines might recommend 0W-20. Always check your vehicle’s owner’s manual for the precise recommendation for your specific year and engine.

Q2: Why should I use synthetic oil in my Scion TC?
A2: Synthetic oil offers superior protection and performance compared to conventional oil for your Scion TC. It provides better resistance to temperature extremes, improved lubrication, reduced engine wear, cleaner engine internals (less sludge and deposits), and often allows for longer oil change intervals. Using the Best Synthetic Oil for Scion TC helps maximize engine longevity and efficiency.

Q3: How often should I change the synthetic oil in my Scion TC?
A3: While synthetic oils typically allow for longer drain intervals than conventional oils, it’s crucial to follow your Scion TC’s owner’s manual recommendations. Many full synthetic oils are rated for 7,500 to 10,000 miles, or even more, but environmental factors, driving style, and filter quality can also play a role. Always refer to your manual first, and consider a high-quality filter like the FRAM Ultra Synthetic for extended intervals.

Q4: Can I switch from conventional oil to synthetic oil in my high-mileage Scion TC?
A4: Yes, you absolutely can switch from conventional to synthetic oil in a high-mileage Scion TC. Modern synthetic oils are fully compatible and can even offer benefits like seal conditioning to prevent leaks in older engines. Products like Valvoline Full Synthetic High Mileage are specifically designed for this purpose. Many drivers find that switching to synthetic can improve engine performance and reduce oil consumption in older vehicles.

Q5: What are ILSAC GF-6A and API SP, and why are they important for the Best Synthetic Oil for Scion TC?
A5: ILSAC GF-6A and API SP are the latest industry standards for motor oil, ensuring modern engines receive optimal protection. ILSAC GF-6A focuses on fuel economy, emission system protection, and durability. API SP specifically addresses the critical issue of Low-Speed Pre-Ignition (LSPI) and timing chain wear protection, which are crucial for many direct-injected engines. Choosing an oil that meets these standards, like the ones reviewed, ensures your Scion TC’s engine is getting the most up-to-date and comprehensive protection available.

Q6: Is a 0W-16 oil safe for my Scion TC?
A6: A 0W-16 oil is a very low-viscosity oil designed to maximize fuel economy. It is only safe and recommended if your Scion TC’s owner’s manual specifically states to use 0W-16. Using a viscosity that is too low for your engine can lead to inadequate lubrication and premature wear. Always confirm the correct viscosity for your specific Scion TC model year before using 0W-16.

Q7: Does the oil filter really make a difference with synthetic oil?
A7: Absolutely! A high-quality oil filter is critical when using synthetic oil in your Scion TC, especially if you’re taking advantage of extended drain intervals. A filter like the FRAM Ultra Synthetic is designed to efficiently capture contaminants over a longer period, preventing them from recirculating through your engine. Using a standard, less capable filter with premium synthetic oil is like buying expensive shoes but wearing cheap socks – you’re not getting the full benefit or protection.