So, heres my idea (guess I've been around planes too long).
Heat fuel going to the engine by a fuel oil heat exchanger setup. Fuel enters the vessel and circulates via a copper coil, which is then surrounded by hot engine oil . This would be installed in parallel with the oil system so that a bypass route would be able to control hot oil flow into the system to adjust the temperature.
My reasoning, warming up the fuel would allow it to burn better, and more completely, while at the same time adding capacity to the engine oil and additional cooling.
Idea #2, substitute oil for engine coolant.
Is this needed? Probably not. Just an idea I'm stealing from my plane.
So, just putting it out there, I'm bored, trying to spur ideas.
Don't mind me..bored, the next step is for me to find something to "Fix".