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Castrol SYNTEC is now Castrol EDGE with SYNTEC Power Technology.

Your go-to synthetic is now better than ever. In extreme tests, Castrol EDGE with SYNTEC Power Technology maintained maximum horsepower 30% longer than Castrol SYNTEC. [1]


For years, you've depended on the power of Castrol SYNTEC to outperform conventional motor oils. Now, we've reformulated SYNTEC to outperform even itself:
  • In extreme tests, Castrol EDGE with SYNTEC Power Technology maintained maximum horsepower 30% longer than Castrol SYNTEC [1]
  • New, powerful dispersant molecule suspends particles to fight power-robbing deposits [2]
  • Improved formula continues to keep the engine running at peak power longer [1]
  • Castrol EDGE with SYNTEC Power Technology performs better than conventional oil in the toughest industry tests
  • Superior protection against deposits. Corrosive particles such as acid, soot and oxidized fuel fragments can cause costly damage to critical engine parts
  • Powerful Additive Package that neutralizes corrosive particles, preventing them from grouping together and forming deposits.
  • Neutralizes acids in your engine that can cause rust and corrosion on vital engine parts such as cylinders, bearings and hydraulic valve lifters
  • Meets the world's toughest industry gasoline engine protection requirements [3]
  • Provides Stability & Endurance under extreme conditions (heat, load, speed) that can cause conventional oils to break down
  • Delivers the ultimate performance under high-temperature conditions: unsurpassed protection against volatility burn-off and viscosity increase
  • Can be used with confidence in every gasoline engine passenger car, new or old, regardless of oil previously used [4]
  • Fully compatible with all conventional and synthetic oils 

[1] 5W-30s tested, applies to 5W-30, 10W-30 and 10W-40 grades, based on average performance in extreme power tests vs. prior Castrol SYNTEC.
[2] Proprietary dispersant molecule, US patent pending.
[3] All grades except 5W-50
[4] Follow manufacturer's specifications

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Stillman Volvo Cars

1290 Wilmington Pike (Route 202)
Directions West Chester, PA 19382

  • Sales: (610) 546-2008
  • Service: (610) 364-5678
  • Parts: (610) 399-1300 ext 5


  • Monday 07:00 AM - 05:00 PM
  • Tuesday 07:00 AM - 05:00 PM
  • Wednesday 07:00 AM - 05:00 PM
  • Thursday 07:00 AM - 05:00 PM
  • Friday 07:00 AM - 05:00 PM
  • Saturday 08:00 AM - 02:00 PM
  • Sunday Closed