Race Spec Oil Catch Tank (Push On Fittings)Race Spec Oil Catch Tanks (Push On Fittings). Race Specification Oil Catch Tanks offer a simple yet reliable solution to new MSA regulations for oil catch tanks on competition cars, professionally made in our own UK factory. Alloy Catch Tanks are designed to collect oil and vapour from breather hoses when vehicles are under the stresses and strains of the road or track. This collection facility reduces unwanted elements entering the intake and