Originally Posted by
C4llyT
Well I know thicker oil will be 'squeezed' more, increasing temps, so maybe if the oil is old it's gotten thin.
Dunno just theorising really.
Possibly, however I've done an oil and filter change a couple of weeks ago, and the problem is still there!
How true are the coolant temperature gauges? I know on modern fords, it all runs through the ecu and although the gauge says the engine is at operating temperature, it could be a bit under, causing the oil to not get as hot, which would make the far more accurate oil temp gauge under-read?
Thats just something I have thought of anyway.... Could be worth changing the coolant thermostat?