With the Purchase of Qualifying Shell Rotella Heavy-Duty Engine OilsValid January 1, 2016 — December 31, 2016
Provides up to 34% better wear performance than conventional API CI-4 diesel engine oils. Synthetic base maintains exceptionally uniform flow characteristics for reduced friction and improved fuel efficiency at all operating temperatures. Low-viscosity technology ensures easier starts, extending the life of your starter and battery at the coldest temperatures. Advanced multi-function, low-ash additive formulation reduces ash and sulfur emissions to help maintain the efficiency of the latest engine management systems.
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.