Ok, I just went through the second tank and it was 306 on the decimal. That's a little bit less than the last. I've been using Texaco (with Techron) for the last 4 tanks, and I get it at the same station and pump. This tank I did not add any acetone, and I have my Ecometer installed, so we'll see what I can get with just 93 octane gasoline (no acetone)...