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Gasoline comes from the refineries and is sold to jobbers as needed, the difference is the additive package, techron is very good, not needed in every fill up, use it every 3rd fill up and it will keep injectors clean from gum. The other difference is the crude that is used to distill the gas from. Sweet or sour crude?
Better to use a sweet crude, not as much sulfur in it to start with, more expensive crude. Very hard to know what crude the refinery in your area uses.
The refinery I work for uses the most nasty crude posible and then we extract the gas from it therefore making a better margin.
I would reccomend to use the techron once a month and the correct octane to keep the engine from knocking and causing premature connecting rod damage.
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