Once again Rubjonnys info fixed my MFA oil temp.
I was curious also about the 160 for oil temp, I had a look for the sensor and found the top was damaged, the wire (black/green) was screwed onto the distributor as an earth by the previous owners. I myself had the distributor out recently as the hall sensor had failed. I also incorrectly hooked up the 'earth' wire.
I had to solder a spade connector onto the brass sensor stub as the plate part had broken off. I also sturdied it a little with a silicon hose over my bodge and some hot glue injected inside. It now works.
Thanks for info on hidden menus also. Now to understand all the info.