#2 is your standard all season diesel fuel.
#1 is a winter fuel designed not to gel up in really cold temps. Closer to kerosene. Shouldn't see this unless the grass turns white.
Red is untaxed diesel, mostly for farm or off-road use. The red dye that is added will leave a stain on your injectors and probably other areas. Don't get caught with red stains in your coach! Pretty hefty fine.
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