Helps Extend Engine Life in Cars with over 75,000 miles. Castrol GTX High Mileage is the premium part synthetic motor oil specifically formulated for vehicles with over 75,000 miles. As your engine ages, gaskets become brittle, seals deteriorate and oil consumption increases. Castrol GTX High Mileage is formulated with unique additive technology that combats this aging process and helps extend engine live by providing unsurpassed protection against sludge, wear and oil burn-off.* * vs leading conventional oils, 5W-30 tested
- Phosphorus Replacement Technology helps extend emission system life
- Superior dispersancy that fights sludge build up
- Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
- Advanced additives that help prevent engine wear | Improved Fuel Economy**
- Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
- Phosphorus Replacement Technology helps extend emission system life
- Superior dispersancy that fights sludge build up
- Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
- Advanced additives that help prevent engine wear | Improved Fuel Economy**
- Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications