On Sat, 9 Nov 2019 23:57:06 -0700, rbowman wrote:

On 11/09/2019 08:05 PM, Clare Snyder wrote:
In many cases it has been mixed in the truck.. Same with the
proprietary" ingredients. The "add pack" is dropped into the tank
truck, and then it is filled with "raw" gasoline. The add-pack is the
difference between Shell, Conoco, Mobil, etc.


https://i.pinimg.com/originals/bb/8c...5e40eeb3d8.jpg

https://tommcmahon.typepad.com/.a/6a...b977970c-800wi

I was always amused by the Sunoco 'custom blend' pumps. Pick your poison
with the selector and watch the 'octane' wheel spin faster for the
higher grades.

iirc the selector levers outlasted the spinning wheels when the
regulatory agencies decided the wheels were pure bull****. Nice
marketing though.
Virtually all pomps now are "custom blended" The refinery produces
regular and premium. Your "mid grade" is "custom blended" That is
exactly what Sunoco did way back when. The "octane wheel" showed the
metering of the "hightest" into the mix. Mixed at the pump.