Fun with the Scangauge

I successfully added short term fuel trim, long term fuel trim, and lambda from the O2 sensor to the Scangauge.

I also added the second O2 sensor (after the cat), horsepower, torque, and air fuel ratio, but I didn't get to test them to see if they work.

Long term fuel trim is 12, whatever that means. Short term fuel trim was 0 or 1.

Could it be that 12 means 12%, and the injectors are 12% over their normal duty? Makes sense to me. That would be about right for 30% ethanol.

Just how much ethanol is in E85 this time of year?

Commenter Alcohol said that E85 is actually 83% ethanol this time of year.

I beg to disagree.

June is a "2" month, 2 being 74% ethanol, minimum.

I need to find a hydrometer that can measure the ethanol content at the pump. This guessing business is nuts.