Ok tried to get the bung out Mat told me about, and struggled. As Mat mentioned maybe previous work got it silliconed in. Gave it a few goes and failed. Then it got too warm so I'll leave it for a cooler day. The oil/oil mist amount around that area hasn't changed or got worse.

Plugged the temp. sensor in finally yesterday. And I'm not really sure but my gauge doesn't go over 70C. That was the Max I've seen it. Just came back from a 25 minute drive, and it is already 32-33C, even with aircon on, didn't go above 70C. This is too good to be true so something is up.
Rod (Rocket) had similar max temps so. I don't know ...
My ECU Talk cable didn't arrive yet so I cannot compare the temps to my factory sensor yet...