'89 Verde - stumbling after switching to ARCO 92

[Westphal50@domain.elided]

I'm in the SF Bay area and I usually use Shell or Chevron 92 but I've had to 
use ARCO 92 (at a lower price per gallon coincidentally) for 3 of the last 4 
fillups.  The car recently has stumbled and stalled a few times and just 
stopped completely ( I let it sit and got it restarted and home).  I've 
checked all the usual wiring suspects and I'm pretty sure it's fuel - it may 
even be a filter problem, but everything was fine before using this gas.

Any confirmations on this ?   Thanks !

Dave Westphal

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