Oil temp gauge doesn't seem to move and water temp staying 1/4 rather than half way or not moving at all I'm thinking thermostat? Also come's back with p0141 p0136 when I run scan , codes come back after deleting when you start the engine although not triggering the CEL could this be related? Or this likely to be a separate 02 sensor related issue?

 

So I went out and bought a thermostat this morning drove home and both gauges went up to half way where they should be 🤔 . I usually have to fit the new parts before it makes a difference lol.

 

Spoke to soon when I drive on a motorway temp drops right down , it's acts normal when driving around town and sits in middle of both gauges where it should be. Any idea?