Rinty

Thanks, Nick.

csertich

After you get this sorted out, I'd install the high speed oil cooler fan switch. Very easy mod. Instructions at p-car.com in DIY section.
chuck

Paul E. Dodd

I also had the oil thermostat failure (back at about 80k miles or so). Symptoms mirrored yours almost exactly.

C4 NLW

Thanks again to all you guys for the brilliant series of responses. The dealer is replacing the following today :-

1. Oil cooling Fan Relay.
2. Oil temperature sensor.
3. Oil Thermostat.

I'll give her a good run over the weekend and update you on how things go. And I'm feeeeling fine :-)

ddsiu

Great thread, I guess I will have to to the same to mine. PM sent to you Nick and good luck!