Transmission cool down time for spill 'n fill

[D60]

Here's a dumb question, which in this case would apply to an AB60F in a Tundra:

If a guy (mild PITA customer) drives his Tundra over thus it's at operating temp, about how long for the trans fluid to drop under 100*F so fluid level can be accurately checked after a spill 'n fill?

I'm pretty slow in draining and filling these, so I think it would cool enough by the time I was ready to check it, but not sure.

Say ambient temp while driving and in the shop is ~80F, if one feels this is necessary information.

 

[thastinger]

If I wait an hour after they get off the road on mine, the fluid isn't hot enough to be uncomfortable without nitrile gloves.

 

[Dave Hess]

3 hours for me. I don’t want to burn my hands.

 

[cptbarkey]

1 hour sounds right, if it has the same thermostat system as my lexus its around 200 degrees normally.

 

[Astro14]

About an hour - time enough to rotate the tires, do the oil change, and perhaps, the diffs, before tackling the now-cool transmission.

 

[SC Maintenance]

Newtons law of cooling applies.

 

[The Critic]

Probably 4-8 hours. It takes a long time for these transmissions to drop below 100F, especially if you are only doing a drain and refill.

 

[loneryder]

I had a shop put a fan blowing on the trans for about an hour to get the temperature down. This was a Mercedes where you have to fill it and bring it up to a certain temp to check it. Has to be cooler than the full temp to fill it.