This tank is going to have an integrated oil cooler. The triangular tube/duct that I'm making will cut through the tank from the top left front (intake) to the lower right back (outlet).
Fins on the air duct will reduce the inside temperature, especially the oil returning from the engine will directly land on the cooling duct instead of the warm oil.
The vertical angle/form of the duct has been designed aligning to the gas tank's bottom for efficient/continuous air flow.
