Shell Lubricants | Nitrite-Free Rotella Coolant

Extended Life Coolant–Nitrite Free (ELC NF) joins the Shell Rotella coolant portfolio as the companion to Ultra ELC. Both are targeted to a growing segment of commercial vehicles that are moving to nitrite free engine antifreeze/coolants to better protect aluminum components.

“Rotella ELC–NF was formulated to meet more severe operational conditions of modern, hot-running engines,” says Shell Lubricants OEM Technical Manager Stede Granger. “This is particularly important for new emission engines, especially those with exhaust gas recirculation.” The coolant provides improved protection of aluminum components, including modern brazed heat exchangers, he adds, and meets many of the newest OEM specifications.

Rotella ELC–NF is proven for extended life operation in diesel and natural gas-powered heavy-duty trucks. It offers what product engineers contend are outstanding heat transfer performance, plus cavitation (pitting) and related cylinder lining damage protection. It can help extend the life of water pumps, radiators and other cooling system components. Rotella ELC NF also has no supplemental additives or extender use required for the life of the product.

Extended life coolants are formulated for 600,000 on-highway miles or 12,000 hours in commercial applications, and provide overall reduction in cooling system maintenance. They offer complete cooling system component protection by helping to reduce water-pump failures, hard-water-scale deposits and silicate gel. Shell Rotella ELC–NF meets ASTM D3306, D4985 and D6210 and TMCRP 329 and RP 364 requirements. —


IShell Lubricants’ new site profiles the next generation of diesel engine oils known as American Petroleum Institute (API) Proposed Category 11 (PC-11), covering product fundamentals, impending changes, testing updates, and how the specification is expected to affect new, current and older engines when PC-11 replaces API CJ-4 engine oils by 2017. The site also explores diesel engine technology changes, driven by tightening emissions regulations, and how Shell Lubricants is approaching the Rotella PC-11 series.

 “PC-11 is a constantly developing specification and new information is available regularly to guide the industry through the expected changes,” says Shell Lubricants’ Kate Faucher, Global Marketing Projects lead. “The interactive PC-11 website will serve as a resource for fleets, owner/operators and anyone driving a diesel powered truck or operating equipment to learn more about PC-11 and how it will affect their business.”

38 Shellii shares the journey behind the PC-11 emergence, why a new oil standard is necessary, and how new lower viscosity oils are being developed. Unlike past categories that are backward compatible with the previous category, PC-11 will have two subcategories: One backward compatible to older engines, the other tailored to upcoming engine designs. Education about both oils will be key to seamless integration for every industry affected by the specification change.

“With two subcategories and new engine hardware tests, there will be lots of questions about how the oils will be formulated and which oil should be used for different applications,” notes Shell Lubricants OEM Technical Manager Dan Arcy. “As we formulate and test the new oils, Shell Lubricants can offer valuable resources to those operating diesel engines both on- and off-highway to support them through the transition.”

The new API PC-11 category is being driven by changes in engine technology to meet emissions plus renewable fuel and fuel economy standards for reduced carbon dioxide and other greenhouse gas emissions. Stakeholders also see the category addressing changes in engine hardware and operating conditions that better represent new engine technology since the last heavy-duty engine oil category was introduced in 2006.