OK. All sorted. New stat fitted and much improvement. Car gets to 80 (on the gauge at least1) in about 2-3 miles ish and stays there. Should help with the fuel consumption too- not thats its too bad.
Makes me think that all those above who thought it was Ok because theres was the same might need a new stat too.
Glad its fixed, and just goes to illustrate that all we can really give is opinions based on personal experience. We did just that on the 156 and put a new stat in, and it gets warm in the time your old stat did Given the cold weather I was surprised the car warmed up at all as when my 164 V6 had a stuck stat it took for ever to get hot, and if you drove fast it went cold again..hey ho. Alls well etc.
Nope. Brand new radiator a month ago as it was seeping from the edge apparently. Done just before i bought it but still looks brand new. Was def the stat. In days gone by I was in the trade for 14 years. Never really thought it was any thing else (except poss gauge before I checked it through).