Castrol GTX High Mileage 20W-50 Synthetic Blend Motor Oil - 5 Quarts (Pack of 3) | Premium Engine Protection for Older Vehicles | Ideal for High-Mileage Cars, Trucks & SUVs

Castrol® GTX® High Mileage is the #1 consumer high-mileage brand. It's a synthetic blend engine oil that helps extend the life of engines by protecting against sludge, wear and burn-off. Engineered with Phosphorous Replacement Technology, it also protect emission systems by replacing some of the phosphorous that can damage catalytic converters.

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