TriShield is a unique triple-action technology that attracts captures and disperses particles that can build up in engines and causes sludge build-up. TriShield stops small particles from becoming big problems and protects the car you rely on. This innovative technology uses a polymer that contains 2 chemical hooks that attract and capture both sludge and soot in a single molecule, helping to prevent particles from building up. With TriShield Technology, Castrol has improved the potency and protection that GTX provides.
- Contains proprietary trishield technology to attract, capture and disperse particles to protect against harmful deposit build-up
- Provides lower friction to help improve gas mileage
- Highest North American standard of protection against viscosity breakdown
- Castrol GTX uses premium, custom-made additives and is the most advanced conventional oil available













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