Castrol GTX MAGNATEC 5W-30 Full Synthetic Motor Oil, 5 Quarts

When a car engine stops, engine oils drain to the sump. The next time it starts the oil begins to recirculate. During this time, critical parts can be

Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today.

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When a car engine stops, engine oils drain to the sump. The next time it starts the oil begins to recirculate. During this time, critical parts can be vulnerable to damage. Up to 75% of engine wear occurs during warm-up. Another severe driving condition is stop and go driving in heavy traffic. When idling on congested highways, loads on critical engine parts are at their peak. Both short trip driving and stop and go driving in heavy traffic are severe conditions that create engine wear.