Modular engine cooling seems to keep getting progressively worse with each update coming out. This is more applicable to open-loop cooling systems rather than closed-loop.
Reproducing this issue is very simple, in fact I already have two vehicles uploaded to the workshop with this issue.
Custom dune buggy:
https://steamcommunity.com/sharedfiles/filedetails/?id=2840517636
-2 3x3 radiators connected to a dual crankshaft 8 cylinder engine. Open-loop cooling system with 64 L/S all throughout.
Can-Am Maverick UTV:
https://steamcommunity.com/sharedfiles/filedetails/?id=2800668456
-1 3x3 radiator connected to a single crankshaft 6 cylinder engine. Open-loop cooling system with 64 L/S all throughout.
It would be great if 3x3 and 5x5 radiators did more to cool engines better in high-RPS applications.