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Old 07-05-2015, 09:55 AM   #11
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Originally Posted by wnokes7 View Post
My 05 Chevrolet 3500 with the allison transmission has never been over 180 degrees, even on the hottest days of the summer.
Same here.

However according to a retired Allison engineer, Trans-Syd can run at 220 and tolerate short bursts of up to 350 with no problem.

From Diesel place.

It will take temperature of to 450F (when you get to the Flash Point). I'd say you could run it for long periods of time up to 250F and up to 350F for short periods of time without much damage to the fluid.

Fluid life is proportional to heat so the higher the temperature the faster it oxidizes. It has very long life at constant temperatures up to 220F.
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Old 07-05-2015, 12:19 PM   #12
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I had an after market gauge installed on my last truck and it never got over 200 deg. except in the mountains. I would pull over and let it cool when it did.

2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS

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Old 07-14-2015, 07:36 PM   #13
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Old 07-14-2015, 07:44 PM   #14
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Originally Posted by skidoorider View Post


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