BP gasoline with invigorate

Exxon was half the other two in the study I saw. Regional differences? I dunno.
This isn't the video I saw but you were right about Shell and BP premium and I was right about Exxon regular according to this video.
I use only regular and a lot of Sunoco, Valero and Shell because they are convenient but if I have a choice I try to use Exxon.

 
I use what ever gas is on sale. Period ( my cars only require 87 ). Once in a blue moon I'll throw in 93 if on sale. Noticed it burns much faster than 87. So, screw that . 87 is 87. They add the additives at the station or the depot. My bro-in-low trucks gas and that's how it works. I throw in a bottle of Chevron and dry gas every now and again to clean things up, and get moisture out. Only use the red bottle of HEET. That is the real isopropryl alcohol that removes moisture. The yellow bottle does squat. This ethanol fuel sux anyway. Now I heard they want to increase the percentage. GREAT :( More black tailpipes. Garbage corn liquor they're feeding us. LOL
In reality, 93 octane burns slower, so that it doesn't ignite before TDC or spark.
 
I don't care much about TT. I just try to remember who gets new tanks and how clean they keep their facility. On 2 recent trips I filled up with BP regular on the first trip and got 33.5 calculated and on a second roadtrip I got a fillup at local Marathon and got 31,5 calculated. Neither fillup was very scientific but I just fill till the pump shuts off and wait 20 or 30 seconds and fill till pump quits again.
 
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