Well it may be for a heli but i wouldent know and it dose both cools oil and heats fuel. Heating of fuel can lead to better gas milage and better atomization. And yes i know heating fuel=bad but im almost 100 that oil is not hot enuff to burn gas not only that but i was thinking run a oil cooler( radiator style) before the oil enters the oil to fuel so its cooled even more and see how that dose