Running slightly rich is much safer than running lean
} } Cermax Ceramic 10W-40 Synthetic Motor Oil — STM-3 Nano Silicon Carbide Technology | Quad-Action Run Clean Protection | Heavy-Duty Viscosity | Up to 30
Mazda CX-5 SkyActiv-D 2
modestly improved fuel economy (typically 1–3% on a stable linehaul duty cycle)
and the newer low-GWP blends R-448A/R-449A/R-454A
Complete Ceramic Protection for Heavy-Duty Diesel Pickups — Power Stroke, Cummins, Duramax Oil Quantity:16 Quarts Running slightly rich is muchComplete Ceramic Protection for Heavy Duty Diesel Pickups Power Stroke, Cummins, Duramax The Cermax Diesel Ceramic Synthetic Oil Value Package for Pick Up Trucks is purpose built for heavy duty 3 4 ton and 1 ton diesel pickups running 5. 0L7. 3L engines Ford F 250 F 350 Power Stroke (6. 0L, 6. 4L, 6. 7L, 7. 3L gas diesel family), Ram 2500 3500 Cummins (5. 9L 12V 24V, 6. 7L), and Chevrolet GMC Silverado Sierra 2500HD 3500HD Duramax (6. 6L LB7 LLY LBZ