C6 questions
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C6 questions
I have an old '78 4x4 wrecker. It's strictly a yard truck now. Hasn't been on the road to see wrecker use in many years. It's currently 18° outside, and the truck is piśśing out tranny fluid from the radiator. I need to use the truck. Here's my questions... (1) how much tranny fluid does the radiator actually hold? (2) What is the fluid operating temperature under normal use? (3) What is the high end safe temperature (say pulling a heavy trailer up a really long grade)
The first three were just generic questions, to help me under stand the system. Like I said, its 18° outside, and the truck is sitting under a foot of snow, with more expected. (4) Can I just disconnect the transmission lines altogether, and for a quick fix, make one new line to just loop the fluid output, right back into the input, of the transmission, to get the truck up and moving on its own? Truck doesn't leave the yard, doesn't pull a load, so I can't see the transmission making excessive heat from being worked hard.
The first three were just generic questions, to help me under stand the system. Like I said, its 18° outside, and the truck is sitting under a foot of snow, with more expected. (4) Can I just disconnect the transmission lines altogether, and for a quick fix, make one new line to just loop the fluid output, right back into the input, of the transmission, to get the truck up and moving on its own? Truck doesn't leave the yard, doesn't pull a load, so I can't see the transmission making excessive heat from being worked hard.
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Joined: May 2005
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Wow, that's all the radiator t-cooler holds is 1-2 cups of fluid. Don't know why, but would have assumed much more. Thanks for answers/knowledge.
Anyone see anything wrong with looping the tranny back into itself?
Anyone see anything wrong with looping the tranny back into itself?
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Joined: Sep 2017
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From: Francis
Looping is not a good idea, even at the outside temps you are seeing. Overheating trans and burning it up, even on short trips, is easy to do. If time is a factor, and you need your truck asap, the quickest and safest thing to do would be buy an aftermarket trans cooler, and slap it in quick. For just yard work, a cheaper small one would probably be enough.
Cargo Master
Joined: Nov 2007
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Just loop it. I've been running my yard truck without a radiator for 2 years now without issue, motor barely ever gets up to temp so i don't see the tranny being an issue. Just watch temps and shut it down if its getting hot. Common sense stuff.
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