First, there is no Esso anymore, World Fuel Services bought Imperial Oil's entire network back in 2016. Unfortunately IOL exited the 100LL business in YQT a few years back due to volumes. This left Shell and their dealers free to price as they see fit.

1. As stated Prist is a brand name and that is part of the problem. Same as Jet A1 and Jet A1 w/FSII are 2 different types of fuel. 2. DEF is a new reality and won't be going away. 3. A good operator has procedures and training in place to prevent such occurrences. 4. In aviation fuel when a product...

When you go from one tax collector to multiple with a less vested interest a lot of taxes go uncollected.