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vitesse · 27th July 2021, 08:57

You doubt the 18 deg figure? Well I know you are familiar with Danish and perhaps Swedish is close enough: “När motortemperaturen har kommit upp till ca +18 grader C krävs inte längre någon extra uppfetning och bränsle/luftblandningen styrs då med Lambda 1 som riktvärde” source Rover 75 Tekniskt kompendium.

“I’m sure you know Volvo is Swedish” really? so Volvo (cars) is Swedish again, how nice, thought the Chinese had ownership.
A quick check on thermostats reveals this:
Thermostat, Coolant 92 °C
Volvo 850, 900, C70 (-2005), S40 V40 (-2004), S60 (-2009), S70 V70 (-2000), S80 (-2006), S90 V90 (-1998), V70 P26, V70 XC (-2000), XC70 (2001-2007)

And I know you are familiar with SD1s too - so am I, my wife & I used SD1s for many years summer & winter. 82 deg thermostat in summer but 92 in winter with further measures like cardboard in front of the radiator and even removing the viscous coupling complete with fan blades. Without these winter measures the car resembled an igloo with frost on the inside. And I was by no means alone: many owners swopped thermostats summer/winter back in the days when such a thing was still possible, even those who owned Volvos.

So please enjoy your own 82 deg thermostat and I will continue to enjoy my 88 deg one.

27th July 2021, 08:57	#142
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,538 Thanks: 395 Thanked 823 Times in 652 Posts	You doubt the 18 deg figure? Well I know you are familiar with Danish and perhaps Swedish is close enough: “När motortemperaturen har kommit upp till ca +18 grader C krävs inte längre någon extra uppfetning och bränsle/luftblandningen styrs då med Lambda 1 som riktvärde” source Rover 75 Tekniskt kompendium. “I’m sure you know Volvo is Swedish” really? so Volvo (cars) is Swedish again, how nice, thought the Chinese had ownership. A quick check on thermostats reveals this: Thermostat, Coolant 92 °C Volvo 850, 900, C70 (-2005), S40 V40 (-2004), S60 (-2009), S70 V70 (-2000), S80 (-2006), S90 V90 (-1998), V70 P26, V70 XC (-2000), XC70 (2001-2007) And I know you are familiar with SD1s too - so am I, my wife & I used SD1s for many years summer & winter. 82 deg thermostat in summer but 92 in winter with further measures like cardboard in front of the radiator and even removing the viscous coupling complete with fan blades. Without these winter measures the car resembled an igloo with frost on the inside. And I was by no means alone: many owners swopped thermostats summer/winter back in the days when such a thing was still possible, even those who owned Volvos. So please enjoy your own 82 deg thermostat and I will continue to enjoy my 88 deg one. Last edited by vitesse; 27th July 2021 at 09:05..