Getting ready to do drop the pan on my transmission but want to get one detail straight.

There is a lot of info on the 722.6 and making sure it's fluid level is correct and how to check it, but is making sure the temp is correct as critical in the 722.3?

The service manual does state 80 degree Celsius but just says "run engine for 1 to 2 minutes", the write up on Pelican Parts for the 722.6 states to check the temp with a IR temp gun.

__________________
89 W124 300TE - 136,000 miles