mel_t_vin

So, I understand that the lower white range on the water temp gauge spans 40*C to 60*C [104*F to 140*F], the first "third" mark represents 80*C [176*F], the second "third" mark represents 100*C [212*F], and the start of the red zone represents 115*C [239*F].

Does anyone recall reading [maybe in the FSM?] what Porsche specifies as the normal/typical operational temperature range for the 944/951?

I'm wondering if installing a lower temp thermostat/fan switch could actually force the engine to run cooler than Porsche intended.

Comments?

mikeyoman

Shop manual states correct engine operating temp (for setting fuel system) as oil temp of between 70-90 degree C.
As thermostat is designed for opening at 80-85 deg C then I would guess water temps of between 80-90 are probably ok.