Castrol India Limited manufactures Wear Protective Petrol Car Engine Oil. Castrol India Limited is an ISO 9001- 2000 certified company a wide range of automotive and industrial lubricants for passenger car engines, trucks, motorcycles and scooters. The Wear Protective Petrol Car Engine Oil, available under the brand name "GTX" is suitable for use in all types of petrol cars and is designed to provide superior wear protection by Special `Sludge Busters" to keep car engine sludge free.