You got a load of water and sediments with your gas. Gasoline travels from refineries to terminals via pipelines. A refinery puts a barrel of gasoline in the pipe in Texas and can immedaitely take a barrel out in NY. All gasoline is essentially the same, varying only in octane. The differences are in the additive packages that are mixed in at the terminals. Some are better than others, but all have some detergents that keep injectors clean. If you have blended winter fuel that uses ethanol or other alcohols, then be advised that this is mixed at the refinery or intermediate points. If it flows through pipelines then you should understand that it is a powerful solvent and "hygroscopic," which means it will pick up all the moisture in the pipeline and will scrub out all the pipeline crud as it passes through on its way to the terminal/mixing point. This ends up in the station tanks and then in your tank.

Alcohol is also used as a gas dryer when normal condensation occurs in the fuel tank, or when suspended water settles from the gasoline and causes the stalling and mis-firing you described. Always carry some gas dryer in your trunk, Heet or another brand would be good. Also, the Techron contains alcohols which will allow the water to stay suspended in the gas, so, yes, it will help to remove the water as you noticed. Check the Techron bottle, it lists this as a benefit of its use. Try to avoid fueling at stations where the tanker is off-loading. This does stir up the crud.

Modern fuel injectors are finely made precision parts that can be easily fouled by contaminated fuels.

Finally, it may be wise to change your fuel filter: Add another bottle of alcohol and another of Techron and drive the contamination out by driving the car.

Like a bad meal, this too will pass.

FWIW,

230/8