Hi Sean, 12C is, in my opinion, not worth mentioning. Don‘t bother, keeping the perfect temp setup in mind that you achieved.
I happen to know suppliers of heat exchangers that combine oil and coolant cooling and suggest that it is somewhat desireable to have exactly identical temps for oil and coolant. I am convinced that is rather marketing talk than a real factor.
The positive results from your redesign force me to pose the question if you made any radical changes to achieve you recent temp framework. I‘d be very interested to read about it.
