Quote:
Originally Posted by extrashaky
Our cars have an idiot gauge for coolant temperature. That gauge doesn't actually tell you the coolant temp. It rises while the engine is warming up, but it stops in the center when the coolant reaches about 180° F and stays there at least until 220° (the hottest I've had my coolant), possibly higher. At some point when you exceed the "normal" temperature range, it starts climbing again.
If you monitor the engine temp using Torque or an aftermarket gauge, it can be disconcerting the first time you're driving in traffic and see the temp swing 30° up and down as you stop and go. If you leave your A/C on all the time, the fan will kick on and keep it around 190° to 195°. If you turn the A/C OFF, you'll stay around 190° while you're moving and quickly rise to 220° when you stop. But the needle on the gauge on the dash will never move.
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True for earlier twins, but 2017+ BRZs have true temperature for coolant and oil displayed on the multifunction gauge.