E4 CEM since patch

[xnomad]

Forgive me for being a bit lazy here but I haven't had much time for this game lately.

I've played online maybe 3 quick times since the new patch and decided to be lazy and take the E4 with auto prop pitch as I'm out of practice. I've had my radiators open fully, encountered an enemy, closed radiators to half, engaged the WEP done a spiral climb and in a few seconds windscreen is covered in oil. Got fed up and quit the game.

I've just got too much going on to invest into going full nerd with this game as I used to do. So I thought can someone please explain what has changed in CEM and what I did wrong?

I think I also noticed that opening the water radiator fully didn't seem to change the coolant temp at all whilst cruising over the channel.