Should I cover aux cooler on cold days?

[ghunt81]

I have about a 10 mile trip to work, one way.

It was 26 degrees this morning. I let my truck warm up for 10 minutes or so before I left for work (enough to defrost the windshield), then drove in.

I have the temp probe for my trans temp gauge in the spare port on the side of my 5R55E (behind the linkage, originally had a plug in it).

According to the gauge my transmission temp had barely hit 150 degrees as I was pulling into the lot at work. Is that normal?

I still have the factory cooler in the radiator, I replaced the original auxiliary cooler with an aftermarket one similar in size, so I don't have any huge cooler or anything.

 

[kimcrwbr1]

I wouldnt mess with it the cooler oil will only make it last longer.

 

[ghunt81]

So there's no such thing as too cold for the transmission fluid? This is pretty much the first vehicle I've owned with an auto so I don't know much about them.

 

[adsm08]

It won't hurt anything. Even in summer the trans shouldn't be up to temp after a drive like that.

Idling in park doesn't do much to get the trans warm.