Methanol won't directly cool oil, but it will cool your combustion chamber and in turn lower EGT's. This will make the engine run more efficiently, while making more power.
Problem is with methanol you will be adding boost, and therefore creating more heat on the turbo's. The reality is in the 3 years running methanol on this car, my oil temps were still the same they were without methanol, they may have rose slightly slower with methanol.
If you want to cool your oil, get an oil cooler, or an aftermarket oil cooler if your stock is sufficient.
Thread starter if you need any help I'm a PM away. There are many people that modify their car with no oil cooler, I dont normally recommend it but it can be done depending on your conditions and climate as well as how the car is driven.