i've been switching gasoline brands for a long time now, since minor players in the industry came into play, purposely to determine if there is any appreciable difference among them ... so far i have not experienced any difference with normal driving

until recently ... with our honda city low on gas, i filled up full tank unleaded with PTT at san fernando, pampanga (near malls) ... after shopping for an hour, the car had difficulty starting and can't maintain normal idle rpm on the first several seconds, i needed to pump the gas pedal to keep it running, otherwise engine will stop. suspicious of the quality of gas, i decided to use all of it until tank is again near empty ... it took almost a week to empty and car consistently hard-starts when cold ... then i refilled with usual petron unleaded and problem is gone

now somebody else (tsikot member) had a recent similar problem with vortex gold (problem disappeared after filling with velocity) ... and there was news about bmw's experience in subic although meron denial (yata) ang bmw (i suppose to protect bmw's name, not the gas brand)

ano ba talaga ang nangyayari sa mga gasolina natin? napapabayaan na ba ang quality control nila? o meron lang yatang bulok na na-deliver sa mga gas stations?

have you guys experienced similar problem?