Quote Originally Posted by maxhedrum View Post
Used to work for a company that sells a required equipment for all gas stations. We have independent stations requiring frequent maintenance compared to standardized big 3 stations (shell,petron, caltex).

On our analysis, they (not all) were using substandard gas sometimes mixing un-authorized additives which easts up the metal/plastic of the equipment. Example of these additives is a substance to make the unleaded smell and colored like a premium (then sold as premium). These will only work for a week or two and have to be renewed.

after learning this, I stopped fueling from independents. they maybe cheaper by 0.5 to 1 peso but not worth the risk for my car.
actualy is not about the cost of the gas but e10 yun problem, yun mga old car at motorcycle ng mga ahente and messenger ko nasisira yun fuel line nila at tumotope yun car. and these damage not only the fuel consumption but also the engine and its component. and besides the big 3 is not that 100 percent reliable. it always depends on the station itself, ihave 2 dealers ng gas station ng shell nakilala ko. they do but not always get their supply to some of the independent dealers when the supply is low and over price. and i have also a friend who is independent dealers get their supply from caltex.