Havoline Synthetic Blend SAE 10W-40 Synthetic Blend Havoline Synthetic Blend SAE 10W-40 is a high performance, multigrade motor oil formulated from a special blend of selected mineral oils, synthetic base fluids and matching additive technology for use in passenger car and light truck gasoline and diesel engines under a wide range of operating conditions. Benefits: Prolongs engine life Wide temperature range capability of the synthetic blend ensures correct oil viscosity to reduce friction at start-up, and to provide effective lubricity during high temperature operation. The effective anti-wear additive system provides outstanding wear control in even the most sophisticated valve train mechanisms, including those with variable valve timing. Preserves full power and performance Works immediately upon contact with an engine’s moving parts to create a protective coating that shields the engine against deposits preserving full power and performance. Provides excellent control of ring belt and piston skirt deposits, even under the most severe operating conditions. Reduces maintenance costs Higher thermal stability and oxidation resistance provides outstanding protection against in-service oil degradation which contributes to filter blocking and sludge formation in the oil galleries, crankcase and valve train.