These 'Dark Matter' oil catch tanks from Optimum Balance Products (OBP) are designed to collect oil from the engines breather system to prevent it entering the intake system which can be detrimental to performance. Dark Matter is a matt black coating which is hard wearing and resistant to petrol, oils, acid and alkali. This makes it ideal for use in competition engine bays which are subjected to the harshest of conditions.Ideal for competition or highly tuned enginesAllows the engine to breathe without oil entering the intake systemCoated in 'Dark Matter' for a long lasting great looking matt black finishAircraft grade aluminium construction which is pressure pressure tested for quality assurance.This range of oil catch tanks (with the exception of the 0.5 Litre round tank) feature a sight tube gauge so you can see if the tank is full and requires emptying. A drain plug in the bottom of the tank provides a provision for easy draining.The oil catch tanks are available in a range of shap