E85

I'm inclined to know does the type of fueling also chnage the combustion temperature drastically? For example the use of E85 fueling.

"Ethanol burns cooler than regular gasoline. It requires lower combustion temperatures. Also, it creates a thermodynamic cooling effect that regular gasoline doesn’t offer. This is quite beneficial because E85 helps keep the engine cool."

Depends on what you call 'drastically' - IIRC, it's around 30C peak combustion temperature compared to petrol/gasoline?