A table of alcohol percentage in the fuel tank, showing changes as E85 is added to E10 and vice versa. Table also shows value of fuel, taking into account the difference in cost of E10 and E85.

As fuel approached the $1.50 per litre point, I began to investigate alternatives to current fuel supplies. There was a petrol station close to my house that had an E85 bowser. It was locked all the time with a padlock. When I asked the attendant if I could use the fuel, he advised me that a conversion kit had to be installed to so that the car could use E85. He explained that the fuel was E85: that it was 85% ethanol and only 15% petrol.