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Old 08-16-2019, 04:04 PM   #1 (permalink)
David Jay
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How much fluid to add?

I just finished a fluid and filter change (to TES-295). Level is just below the hot "low" mark so I need to add a bit.

How much fluid is required to go from the "low" mark to the "high" mark? I don't want to over-fill.

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Old 08-16-2019, 05:22 PM   #2 (permalink)
Ron Nielson
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Lots of posts about this. When hot, been driving around for 20 minutes or more, fluid should be at the bottom of the hot hash marks.

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Old 08-16-2019, 06:06 PM   #3 (permalink)
David Jay
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I did a lot of searching, but didn't find any reference to amount of fluid. I have about a half quart left and I was wondering if that was enough.

I guess I will have to use the "add, check, repeat" method. No heavy towing until Labor Day weekend.
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Old 08-19-2019, 05:48 PM   #4 (permalink)
David Jay
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For a future search on this topic, I found this in the 2013 Duramax supplement:
"The width of the HOT RUN band represents approximately 1.0L (1.06 qt) of fluid at normal operating temperature."
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Old 08-21-2019, 11:31 AM   #5 (permalink)
Rvn4me
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Quote:
Originally Posted by David Jay View Post
I just finished a fluid and filter change (to TES-295). Level is just below the hot "low" mark so I need to add a bit.

How much fluid is required to go from the "low" mark to the "high" mark? I don't want to over-fill.
You will want to be on the low mark when hot.
Operate the transmission in DRIVE (D) until the
normal operating temperature of 160F (71C) to
200F (93C) is reached

Last edited by Rvn4me; 08-21-2019 at 11:33 AM.
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