Originally Posted By: Maximus1966
Top Tier is a total farce. There is NO enforcement, therefore NO compliance. Gasoline is a fungible commodity, sold and transferred at will. The savings in transportation costs alone prevent distributors from assuring that any station gets a particular "brand" or mystery additive package. In today's energy environment you are lucky to even get the octane grade you think you are buying.
Not true. I've seen it myself. Same refinery, sure, but the trucks leaving for the large regional go out the gate but the Chevron trucks stop for a dose of detergent. Its just commodity industrial chemicals, rather than some fabulous miracle ingredient that they would like you to believe it is, but its there.
Furthermore, there is a built in enforcement mechanism. The detergents act as a tracer, so that Chevron, say, can be sure that its dealers are only using their gas. From their standpoint that's probably the main benefit.
My new car's manual is WAY more paranoid about gas quality than engine oil. I can take a hint.