We’ve taken the Castrol EDGE range to a whole new level of performance. Initially engineered to meet the toughest performance standards the Castrol EDGE range has firmly stood its ground against the 7 Critical Engine Factors. So we decided to take things to an all new level of performance, subjecting the range to a series of extreme tests. The results prove that Castrol EDGE is technologically superior to competitor synthetic oils when pushed to the limit under extreme conditions. Put simply, our best engine oil just got a whole lot better.

The Test: Extreme Maximum Power

Castrol EDGE Sport 0W-40 and Castrol EDGE Sport 10W-60 were proven to maintain maximum horsepower for up to 45% longer than other synthetic oils.

We took two identical cars, both with 4.6L V8 engines, and filled one engine with Castrol EDGE and the other with a competitor’s synthetic oil. Using a special test chassis dynamometer the cars were run flat out at maximum power (225bhp) up an incline of 8.8% without topping up the oil. Our engine was still running strong 40 hours after the competitor’s engine had seized. What’s more, Castrol EDGE outlasted 10 rear tyres, 1 radiator, 1 transmission, 1 catalytic converter and the car used 5 tonnes of fuel.

The proof is in our performance! To see the Extreme Maximum Power test as well as other extreme tests in action click the links below.