Hi James,
Yeah this oil is very highly rated now by many people and suits me perfectly right now for fast road and track use

It's going in this Saturday so should be good. It is a compatible grade for our cars yes. This is off the Opie site in the description (Titan Race Pro S used to be called Silkolene Pro S, hence description having it down differently. It's recently changed its name).
Silkolene Pro S is simply one of the best quality engine oils there is! It's an ester based fully synthetic motor oil created to meet the most demanding use.
Silkolene Pro S is available in 3 different viscosity grades - Pro S 5W/30, Pro S 5w/40 (this product) and Pro S 10W/50. Silkolene Pro S 10W/50 is particularly recommended for use in warmer ambient temperatures.
Silkolene Pro S is suitable for use in all modern cars and is particularly recommended for high performance engines. The full synthetic base fluid ensures that the products are thermally stable and extremely resistant to oxidation, even when stressed to the extremes of endurance.
Silkolene Pro S 5w/40 is also known as:
Silkolene Pro Race 5w-40 oil
Silkolene ester synthetic 5w-40 oil
Silkolene Pro S competition engine oil
Give it a go mate. They are doing 5 litres for £49.99 at the moment with 1 litre free. 5 litres is enough for a full change on our cars.