GTX 5W-30 RN17 ENGINE OIL /5L PACKAGING/ IS A FULLY SYNTHETIC 1 LITER ENGINE OIL. IT IS DEDICATED FOR PASSENGER CARS AND DELIVERY VANS WHERE THE MANUFACTURER REQUIRES THE RN17 OR ACEA C3 SPECIFICATION. THE SPECIAL OIL FORMULA PREVENTS THE ACCUMULATION OF HARMFUL DEPOSITS AND SLUDGE IN GASOLINE AND DIESEL ENGINES.