Having been a keen observer of the 'thermostat debate' over many weeks, I decided that although mine was running a little cooler than some folks, it was a constant temperature. Only in heavy traffic, which I try to avoid like the plague, would the gauge rise to 90 and the fan kick in.
Imagine my surprise when I fitted a bright and shiny new chrome radiator grill, replacing the shoddy old plastic model, only to find that the gauge now reads 5-10 degrees higher.
The new grill has a substantially smaller aperture than the all plastic version, maybe 30-35%. Could it be that in these winter months, the radiator simply over-cools the engine?
Interestingly, my mpg has risen from around 27 to over 31 since the change ... money well spent, as the chrome surround and black grill, with a sparkly new AR badge looks the dogs too !!!
'96 GTV 2.0L 16v T.S. in metallic black