One fuel, two fuel, hot fuel, cool fuel. If you think that was a mouthful, just wait until you hear what our guys have to say in this one! Inspired by the learnings from Episode 43's study on coolant temperature testing, we're going one step beyond icing down the manifold. This time on Engine Masters, presented by AMSOIL, we're deliberately heating and cooling our fuel to see the difference it makes to the tune and the power output of our Ultimate Average 383.