Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
Engine Oil: Fluid Type Specifications
Engine Oil
API Classification ................................................................................................................................................................................................. CI-4, CH-4
Grade ...................................................................................................................................................................................................... 15W-40 (preferred)
Above 0° C (32° F) ....................................................................................................................................................................... 30W, 15W-40 (preferred)
Below 0° C (32° F) ................................................................................................................................................................................................... 10W-30
Below -18° C (0° F) .................................................................................................................................................................................................. 10W-30
