Around where I live, there are two places that I buy diesel from. One is a Mobil station in Connecticut, and one is a Hess station in NY. The Hess station sells 42 cetane diesel at $1.75 a gallon, whereas the Mobil sells 40 cetane diesel at $1.67 a gallon. Is it worth spending the little bit more for the better cetane rating? I use Power Service diesel additive with every tank, and will soon use DFC with every tank once my Power Service stuff runs out.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside