Auto Transmission Fluid Temp
Thread Starter
Instructor
Joined: Aug 2004
Posts: 168
Likes: 0
From: Hooksett NH
Auto Transmission Fluid Temp
My Vette is in storage and I start it every 3 weeks or so.
I have noticed that, when I bring the engine to normal operating temperature, the transmission fluid temperature gets to about 170. This is without moving the car and the outside temp was about 40 degrees.
My question: Is the trans temp achieved mainly from internal friction of moving components or does the proximity of the exhaust system have something to do with it?
Thanks
I have noticed that, when I bring the engine to normal operating temperature, the transmission fluid temperature gets to about 170. This is without moving the car and the outside temp was about 40 degrees.
My question: Is the trans temp achieved mainly from internal friction of moving components or does the proximity of the exhaust system have something to do with it?
Thanks
Team Owner
Joined: May 2005
Posts: 23,682
Likes: 9
From: Flagstaff Az.
a4
Most of the heat generated in an auto is from the convertor, so idling will bring up the tranny temp. By the way, the addition of a hi-stall convertor needs a tranny cooler for this same reason. Until they lock up there is slippage in them generating heat.
Safety Car
Joined: Oct 2002
Posts: 4,434
Likes: 1
From: Austin TX
Cruise-In IV Veteran
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St. Jude Donor '03-'04-'05
The A4's radiator has its main part for the engine coolant, and a smaller part for the tranny fluid. The heat transfer from the coolant in the radiator is heating up your tranny fluid.
Racer
Joined: Jun 2002
Posts: 323
Likes: 0
From: Dallas TX
Originally Posted by Dirty Howie
I have a cooler and a Torque Converter. It takes a LONG time for the tranny temps to get high. Mine runs at 160ish fully warmed on the freeway.
Different story at the track though.......
DH
Different story at the track though.......
DH
Thanks Bobby
Le Mans Master
Joined: Jan 2000
Posts: 6,725
Likes: 0
From: South Bend IN
Originally Posted by GTC
The A4's radiator has its main part for the engine coolant, and a smaller part for the tranny fluid. The heat transfer from the coolant in the radiator is heating up your tranny fluid.
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
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From: CA.
St. Jude Donor '13-'14-'15
With your car idling in the garage the coolant temps will spike to 200-210---However the tranny cooler runs thru your radiator so i suspect the radiator is HEATING up the tranny fluid-- Many converter companies recc to bypass the radiator trans cooler when installing a stall---along with adding an aftermarker cooler--- My trans temps went down 10-15* after I bypassed the trans radiator set-up---
You just have to use common sense when driving in very cold weather and let the car warm up thoroughly before driving---
You just have to use common sense when driving in very cold weather and let the car warm up thoroughly before driving---
