I like the Scangauge's ability to supply all manner of information, plus the ability to clear codes (not that I have had to yet), but the MAJOR reason I bought this product was to display and monitor ATF or TFT (auto transmission fluid temperatures) Scangauge II allows you to program this into the device via the x-gauge feature. (some vehicles - not all - check on Ample Outdoors's website) To me, this is invaluable when towing either my camper or caravan to keep transmission temperatures down by way of gear selection, speed etc. You would be amazed at the fluctuations in transmission temps (and how high it can get), dependent on what gear or speed you have selected. Hopefully this will help me look after my expensive auto trans for years to come !!! AFAIK, the UltraGauge does not have the ability to display TFT.
Foss