Castrol India Limited manufactures Automotive Engine Diesel with Cleaning Properties. 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 Automotive Engine Diesel with Cleaning Properties, available under the brand name "GTX Diesel" is suitable for use on inter-cooled charged engines and finds extensive application in diesel passenger cars.