With out performance and power enhancing parts the BMW 330i has 235 horsepower!
It depends on which model year / engine. The E46 330i operating coolant temperature is about 97 Celsius.
225 hp
in the trunk, on the right side
The thermostat is located on the front of the engine, between the upper and lower coolant hoses.
The type of coolant recommended for a 2003 BMW 525i is Glysantin G48. You can purchase this at an auto parts store or a BMW dealership.
Full synthetic 5/30
You have to go through the trunk - it's pretty easy
i have a 91 bmw320i and i cant find mine either
Outside temperature sensor either unplugged or broken. Do an internet search for the sensor using the specifics of your vehicle (ie 2003 BMW 330i outside temperature sensor). You will find replacement parts and diagrams of how to fix this yourself.
Use only BMW recommended coolant.
BMW 335i havee a 3.0 inline 6 twin-turbo that produces about 306bhp and a BMW 330i have a 3.0 inline 6 makes 255bhp