allison transmission 3000

Mine usually runs a few degrees cooler than my engine temp when cruising. I see the temp go up in bumper to bumper traffic, slow and go traffic on hot days and right after a stop and shut down on a hot day.

The hottest I've seen it was 230 and started to panic. Later I checked and found that this is not really overheating for the Allison. I later set my SilverLeaf to warn me when it hits 235.