What ever temperature the thermostat is designed for, probably 195 degrees F.
the normal operating temperature for cars is around 190 degrees.
The normal engine operating temperature, for a 3306 Caterpillar diesel engine, is 180 degrees. The engine should not be operated at temperatures above 200 degrees.
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200 To 210 Normal Operating Temperature For All The Auroras 1995 To 1999
The normal engine operating temperature for a 1987 Mustang GT is around 200 degrees Fahrenheit. Anything above 220 degrees Fahrenheit might cause the engine to overheat.
Normal would be 180-210
195f
210 to 220 degrees is normal.
180-210
190-220 F
it is vacuum vavle controled by engine temperature. mostly used until engine gets up to normal operating temperature, or after the engine gets to normal operating temperature. depending on what is hooked up to the vavle. i hope this helps Answer your question.
Only when cold? Condensation burning off Normal condition When at normal operating temperature - could be a leaking head gasket Run engine to normal operating temperature - remove engine oil dipstick and let a drop fall on hot engine part - oil will smoke coolant will sizzle