Geno gave us a satisfactory answer.Originally Posted by 1toycad
Computer changed tranny fluid life reading only if temperature is higher than normal. That is it. If rental car with 9K miles has less than 100% of transmission oil life it just means one or some of next possibilities: 1. Somebody drove that car and transmission temperature was pretty high for some reason; 2. Somebody overwrited computer' data; 3.PROM was changed; 4. Somebody read engine oil life reading instead of transmission oil life.
These rental cars were driven by somebody else. So, we can't say for sure about anything.