A big thank you to everyone on here for all the technical knowledge. I’ve just replaced my thermostat with help from all of he how to guides. A pretty straightforward job apart from the fiat hose clips and not having tiny hands. I would never have known about bleeding the system and would probably have ended up wrecking my engine without the guides.

Temperature is now coming up good. Oil temperature was also at minimum which makes sense if the engine was cold. What is odd though is the oil pressure. It was constantly at 3bar even with the engine off. After getting warmed up today I noticed it at about 2.6 at idle. Up to 3 when I rev slightly.

Another problem also seems to have gone. A jerk/thunk when coming off the revs. I thought it was the recirculation valve. That problem seems to have gone as well.