Yesterday my car (87 T1 log) "died" while I was driving home from Michigan. This was its very first road issue since I purchased the car in 87
-Car was filled to 7/8 tank with 93 from a small gas station
-day was 90F ran AC on second fan speed
-drove 1.5 hours on highway and then stuck at Canadian customs for 1/2hr, after I clear I accelerated to 60mph at 2-3psi.
-after approx 2 miles the car took two moderate surges and died. I pulled over to the road side. I tried to restart by no luck. I turned the ignition off and tried to restart again but no luck.
-checked codes and no error codes and only 55 showed
-waited for a few minutes (maybe 10) and the car started promptly.
-drove 1/2miles to a gas station and filled with 91. The gas was very difficult to dispense and I could only get a trickle in for the first couple of quarts, but gradually I was able to fill at the full rate. I feel this was due to the hot gas tank.

The car worked well on the way home(without AC, just in case) and worked well today.

What do you think?

Could it be I received late winter or early spring gas? (contains more light ends such as butane, gas companies like to add butane as it is cheap and low specific gravity, this is called fluffing the barrel)
I could see early spring gas causing a vapour lock at the injectors/fuel rail.
Thanks for your comments