Auto trans temp.
Racer
Joined: Apr 2011
Posts: 273
Likes: 0
From: Texas Hill Country Texas
That's a good way to go. If the B&M will do a good job and brings the temps down (right now I find them at about 200-210 pretty often), then I'll try to do it quickly. Anyone know of a good Corvette mechanic in Austin/Cedar Park? I'm not really very good mechanically 
Team Owner
Joined: Jun 2005
Posts: 46,295
Likes: 2,596
From: Northern, VA
St. Jude Donor '15
"In honor of jpee"
does anyone know the designed/engineered* operating temperature for the transmission?
*defined: optimal range
*defined: optimal range
Last edited by AORoads; Apr 23, 2011 at 07:40 PM.
Instructor
Joined: Feb 2011
Posts: 100
Likes: 0
I have an '05 that now runs about 30* hotter after the GM dealership did a flush & fill using Dexron v vs. Dexron lll ( lll no longer being used).The tech called GM engineering and they said as long as it does'nt go 20-30 degrees above the engine temp it's okay (they did'nt specify coolant temp or oil temp).My temp was about 172 before the change and 214 after.That's at complete warm-up around town.but it is'nt even summer so I know mines gonna go above 214!
Last edited by ReosLS2; Apr 24, 2011 at 12:22 AM.
Drifting
Joined: Oct 2006
Posts: 1,608
Likes: 7
From: DELRAY BEACH FLORIDA
St. Jude Donor '10-'13
I don't know the model #. I will call HorsePower Sales and ask the model # and size specs on Monday. HPS does all my work and I rely on them for all my installations and tunes. I know they also bought some fittings that didn't come with the kit. I will also try to get those part #'s for you on Monday. MIKE
Drifting
Joined: Oct 2006
Posts: 1,608
Likes: 7
From: DELRAY BEACH FLORIDA
St. Jude Donor '10-'13
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Drifting
Joined: Oct 2006
Posts: 1,608
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From: DELRAY BEACH FLORIDA
St. Jude Donor '10-'13
Pro
Joined: Oct 2007
Posts: 679
Likes: 4
From: TremontonUT UT
You can over cool the trans oil. It is a hydraulic system and needs a minimum temp for proper operation. I don't have a clue exactly what that is on my A6 but I suspect it is approximately 120-140. At least that is what a lot of industrial systems I have worked on call for. Why do you suppose the primary cooler is in the radiator? GM wants the trans oil temp to come up with the engine coolant/oil temp. My Duramax won't lock the converter up until the coolant gets to approximately 165. Under load towing my 5th wheel trans temp would mirror the coolant temp which was always at 210. Too big a trans cooler is bad news in cold weather. If you are racing you may need a secondary cooler. MHO is it would be over kill for the rest of us. Later! Frank
Drifting
Joined: Jun 2008
Posts: 1,746
Likes: 35
From: Jupiter Fl
Food for thought, Lets just suppose the engineers who designed the C6 cooling system knew what they were doing so.... OHHH I dont know, the cars power train could be warrented for 5 years and 100000 miles !!!! Unless your really flogging it at the track, driving in 110+ degree temps or towing with your Vette (Your not are you?
) Then the cooling design of the radiator and A6 trans cooler is going to function as it should with out any additionial help. Gauge readings will go up an down with different driving conditions, these are normal and expected operating conditions for the car. JMHO !! 
) Then the cooling design of the radiator and A6 trans cooler is going to function as it should with out any additionial help. Gauge readings will go up an down with different driving conditions, these are normal and expected operating conditions for the car. JMHO !!
Team Owner
Joined: Sep 2000
Posts: 25,019
Likes: 2,712
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Saying that the caution range begins at 230', and redline is 270', doesn't tell us much about the ideal temperature.
I'm guessing that desired operating temp would be about 180.
The problem with an additional cooler is that during normal highway driving, you may find yourself running something like 150'
I'm surprised the tranny stays as cool as it does. With water temps near 200' or more, the fact that the trans is often below 200' leaves me scratching my head.
Thread Starter
Drifting
Joined: Dec 2010
Posts: 1,939
Likes: 2
From: Danielsville Georgia
Most of the time even in summer heat my Dodge truck trans. runs under 160 unless working real hard. As I stated before I've never seen 200 even towing 4500 lbs. and from what I've read elsewhere 200 degrees is right at the getting in a questionable heat range. Curious to what that D/Max Allison runs out. Your right ROGERS 07 that obviously its in the design. I was just really alarmned to see 210 in mild traffic. I almost pulled over to shut it off and let it cool down. I thought DARN got a stopped up trans cooler or something.
Racer
Joined: Apr 2011
Posts: 273
Likes: 0
From: Texas Hill Country Texas
Racer
Joined: Apr 2011
Posts: 273
Likes: 0
From: Texas Hill Country Texas
Food for thought, Lets just suppose the engineers who designed the C6 cooling system knew what they were doing so.... OHHH I dont know, the cars power train could be warrented for 5 years and 100000 miles !!!! Unless your really flogging it at the track, driving in 110+ degree temps or towing with your Vette (Your not are you?) Then the cooling design of the radiator and A6 trans cooler is going to function as it should with out any additionial help. Gauge readings will go up an down with different driving conditions, these are normal and expected operating conditions for the car. JMHO !!
) Then the cooling design of the radiator and A6 trans cooler is going to function as it should with out any additionial help. Gauge readings will go up an down with different driving conditions, these are normal and expected operating conditions for the car. JMHO !! 
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I'd like to also know.
Saying that the caution range begins at 230', and redline is 270', doesn't tell us much about the ideal temperature.
I'm guessing that desired operating temp would be about 180.
The problem with an additional cooler is that during normal highway driving, you may find yourself running something like 150'
I'm surprised the tranny stays as cool as it does. With water temps near 200' or more, the fact that the trans is often below 200' leaves me scratching my head.
Saying that the caution range begins at 230', and redline is 270', doesn't tell us much about the ideal temperature.
I'm guessing that desired operating temp would be about 180.
The problem with an additional cooler is that during normal highway driving, you may find yourself running something like 150'
I'm surprised the tranny stays as cool as it does. With water temps near 200' or more, the fact that the trans is often below 200' leaves me scratching my head.
The quickest way to drop temps is to drive at an uninterupted 50 MPH. High airflow with converter locked in 6th and a low RPM will get it done in a hurry. Turning on the heater to 90* with full fans is an additional help.
