AMSOIL Signature Series 5W-30 Full Synthetic Motor Oil

Premium Engine Protection That Goes the Distance

AMSOIL Signature Series 5W-30 is not your average synthetic oil — it’s engineered for drivers who demand the absolute best in engine performance, protection, and longevity.

Designed to outperform industry standards, this top-tier oil delivers up to 25,000 miles or one year of protection under normal driving conditions.

Whether you drive a high-mileage car, a turbocharged engine, or a modern pickup, AMSOIL Signature Series 5W-30 keeps your engine running cleaner, longer, and stronger.

Looking for the best 5W-30 synthetic oil for your engine?

AMSOIL Signature Series 5W-30 isn’t just premium. It’s engineered to outperform every major brand in wear protection, oil longevity, and cleanliness.

This is the oil serious drivers trust to extend engine life, reduce maintenance costs, and optimize performance, from daily commutes to high-performance vehicles.

🔍 Top Benefits of AMSOIL Signature Series 5W-30

1. Industry-Leading Wear Protection

• Resists viscosity breakdown 75% better than Mobil 1 and Castrol (ASTM D7320).
• Minimizes metal-to-metal contact even under high-stress conditions.
• Lab-tested to outperform other 5W-30 oils in long-term wear protection.

2. Maximum High-Temperature Performance

• Maintains ideal viscosity in extreme heat (perfect for turbocharged or towing engines).
• Resists volatility and oxidation at temperatures exceeding 500°F.

3. Keeps Engines Spotlessly Clean

• Controls sludge 93% better than conventional oils.
• Prevents deposits and varnish on pistons, rings, and cams — prolonging engine efficiency.

4. Extended Drain Intervals

• Drain interval up to 25,000 miles / 1 year (normal service), backed by AMSOIL’s Limited Warranty.
• Cuts oil change frequency by 2–3x, reducing environmental waste and saving time.

5. Proven Cost Efficiency

• Fewer oil changes = less downtime and lower labor/shop fees.
• Ideal for high-mileage drivers, rideshare owners, and fleet vehicles.

🏷 Meets or Exceeds These Standards

• API SP, SN Plus, SN, SM
• ILSAC GF-6A
• GM dexos1 Gen 2
• Chrysler MS-6395
• Ford WSS-M2C946-B1 / 945-B1
• Honda/Acura HTO-06 (turbo engines)

➡️ Compatible with all modern and older gasoline engines requiring 5W-30 oil.

🚗 Who Should Use This Oil?

This is the perfect oil for:

• Performance car enthusiasts demand maximum power and longevity
• Pickup truck and SUV owners who tow, haul, or drive in extreme climates
• Daily drivers looking to extend oil change intervals without risk
• High-mileage engines need advanced wear protection
• DIY mechanics who want the best for their engine with fewer oil changes

Real Customer Reviews

“I run this in my Chevy Silverado, and I’m getting 22k miles between oil changes. Blackstone lab results show the oil is still good. AMSOIL is the real deal.”
— Jake M., Ohio

“Used it in my wife’s Toyota Camry and my turbocharged Civic — both run smoother, better fuel economy too.”
— Rob T., California

“Yes, it’s more expensive upfront, but you change it once a year. That’s less mess, less time, and it actually saves money.”
— Angela D., Texas

Available Sizes

• 1 Quart Bottle
• 1 Gallon Jug
• Case of 12 Quarts

Drums for Fleet/Shop Use

🚚 Fast Shipping. USA-Wide Delivery

• Ships within 1–2 business days
• Direct from the AMSOIL warehouse or an authorized dealer
• Trackable and insured shipping options

🎯 Still Deciding? Here’s What You Gain:

✔️ Up to 1 Year / 25,000 miles of peace of mind
✔️ Max performance for modern and older engines
✔️ Fewer oil changes, less waste, better value
✔️ Trusted by mechanics, racers, and professionals
✔️ Official AMSOIL Limited Warranty coverage

Frequently Asked Questions

Q: Can I really go 25,000 miles between oil changes?

Yes — when used in normal service conditions and supported by an AMSOIL-backed guarantee. Severe conditions (towing, short trips, dusty roads) may require shorter intervals.

Q: Is this oil suitable for older engines?

Absolutely. It offers excellent wear protection for high-mileage vehicles and can help reduce engine sludge and varnish.

Q: Does this void my vehicle’s warranty?

No. AMSOIL Signature Series 5W-30 meets or exceeds OEM requirements and is safe to use under the Magnuson-Moss Warranty Act.

🛒 Ready to Protect Your Engine?

👉 Click to Add to Cart and upgrade to the best synthetic motor oil on the market.