I think bad gas would still sputter or run really rough when trying to start. Start with the basics before draining the tank. 

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> On Jul 31, 2016, at 7:56 PM, Skip Laubach <skiplaubach@GMAIL.COM> wrote:
> 
> Most likely. I filled up with ethanol-free gas (a rarity in Illinois). I drove 1/2 mile and the engine turned off. No start, just cranking over and over. Getting AAA towed in about 25 minutes. I suspect bad gas as it looked like a pump that does not get used much... and the van died after a very short while. 
> 
> '84 Westy. 
> 
> Question. OK to drain the tank, add 5 gals of normal gas, maybe some Sea-Foam or MMO?  Any other measures that I should take?
> 
> Thanks,
> 
> Skip
> 
> Sent from my iPhone