Got I'm the old girl tonight and pulled out of the car park at work. Noticed the oil temp gauge reading 180deg. As the engine had only just started I figured it was safe to assume the reading couldn't be trusted. Sure enough the car was left to cool (3 hours) and when I turned the ignition lights on the gauge shot straight to 80deg. Do I assume the sender is at fault. Is this on the modene oil cooler/warmer and can it be replaced without swapping the modene out? Assume OE is the only one to get?