No. Diesel fuels vary widely by supplier. Using a true premium diesel fuel can increase both the performance and longevity of your equipment. You’ll notice the difference with quicker starts, more power, better fuel economy and less smoke. Most important, you’ll reduce downtime and maintenance costs – benefits that go right to the bottom line. Cenex® Premium Diesel Fuels are true premium fuels – they’re powerful, efficient performers, formulated expressly for today’s diesel-powered equipment. They contain a high-quality base fuel that works with an exclusive, proven additive package. They’ve been tested time and again, in the lab and field, to ensure they’re the best fuels on the market.