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Castrol GTX Full Synthetic High Mileage is a full synthetic oil engineered specifically for vehicles with over 75,000 miles. It is formulated with Phosphorous Replacement Technology, a proprietary additive that reduces the level of phosphorus, which is harmful to catalytic converters and can shorten emission system life. It provides enhanced protection against wear, leaks, oil burn off and power robbing deposits.

Product Features:

• Phosphorous Replacement Technology helps prevent catalytic converter and emission system failure
• 6X better wear protection than the industry standard
• 6X better wear protection than the industry standard
• Exceptional oil burn-off protection exceeding industry standards. (1) Based on API and ACEA volatility specifications
• Protects for up to 10,000 miles between oil changes. (2) Up to 10,000 miles or 1 year, whichever comes first
• Also suitable for hybrids (0W grades)