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Tranny Temp

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Old 06-29-2012, 09:55 PM
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Default Tranny Temp

What is a high temp for a auto trans, its a 2010 GMC 6 spd if that matters
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Old 06-29-2012, 10:19 PM
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If the fluid gets over 240 the properties of the oil start failing. A trans can normally run north of the engine temp a little bit, say 230 but over 240 starts concerns.

You will know if it hits 260 cause it will start puking fluid out.

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Old 06-29-2012, 10:28 PM
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ok, I thought it was around those temps, I was at 180 today so I'm good
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Old 06-29-2012, 10:31 PM
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That B&M cooler I told you about on the other thread has a 170 deg thermostat on it, so the fan unit kicks on after 170. It really helps, normal, no tow operation is between 120 - 150 deg. And depending on where you're going with the boat, most of the time somewhere around 150 - 180 but I have had times where it's 200 degrees too (35 mph stop and goes. Break out the jumper for the fan unit and let it run!).
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