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Old 04-19-2018, 09:27 PM   #1
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Quick coolant top off question

Replaced the WP and thermostat today... That was fun. Went through the fill/bleed process and all seemed good. Let the car cool and figured I would need to top off a bit. Which I do. Question is, is the "MAX" mark a "hot" mark, or is it ok to top it off to "MAX" cold? Can't seem to find any good answer one way or the other. Thanks!
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Old 04-19-2018, 10:02 PM   #2
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The manual doesn't say directly, but it does caution against removing the cap while hot and the steps say 'Switch off engine and let it cool', then remove cap and fill but 'do not exceed max line', so I assume it's a cold max.
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Old 04-20-2018, 12:44 AM   #3
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Mine is midway between the two marks when cold.
I’ve not ever had a problem with the car spewing coolant.
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Old 04-20-2018, 02:13 AM   #4
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Last Summer when Ambient temps hit 40 Celsius I had some issues with coolant overflowing until it dropped down below the max a little. Had me in panic mode.
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Old 04-20-2018, 02:39 AM   #5
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Quote:
Originally Posted by BoxsterSteve View Post
Mine is midway between the two marks when cold.
I’ve not ever had a problem with the car spewing coolant.
Same here. My W124's tank is marked for Cold/Hot (auf Deutsch, natürlich) and I keep it on cold (min).
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Old 04-20-2018, 07:17 AM   #6
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Yeah, my Jeep is the same way, and prior to the WP it always sat about midway as well. Good deal!
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