Not all TAC 20 or 32s come with viscosity. Was an owners option and was value engineered out a lot from 2007-2010. Would explain why car is in the pit as well, low oil timer clips when oil is warm/hot, levels to bottom floor, and shuts down. As oil cools, car slightly lowers on the colder oil. When you reset, the elevator thinks all is good, and the now colder oil works great with current valve setup.