SA Lube's Castrol GTX Engine Oil is one of the world's most trusted motor oils. It provides superior protection against oil burn-off, 60% better than the tough industry test* It is one of the world’s leading oils for high mileage cars. It's more than just oil. It's liquid engineering that protects your higher mileage engine from oil burn-off and extends the life of your engine. (20 x 500ml)