Detergents in gasoline are hardly "snake oil". You don't have to take my word for it: GM, Toyota, Mercedes and several other manufacturers say so, which is why the Top Tier spec exists.
Here in Motown, Marathon also supplies much of the gas sold by many different brands. There's a Marathon refinery down in Detroit, so it makes sense. But that is not to say that the gas you buy at a Marathon or Speedway (owned by Marathon) station is the same as that sold by other brands that may actually come from the same refinery. Each brand has its own additive mix. Shell, BP and Mobil all have Top Tier-certified fuel. Marathon and Speedway do not. Why would Marathon bother adding detergents to their fuel beyond the minimum required by the EPA?
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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