Home › Knowledge Library › SAE 40 grade oils
SAE 40 grade oils
Viscosity is the first thing to settle when choosing an oil: load-carrying capacity, film thickness and cold-start behaviour all follow from it. This page covers the equipment that typically calls for SAE 40 and lists the catalogue products in that grade.
Where this grade is used
- Engine Oils
- Greases
SAE 40 products in the catalogue
- Shell Alexia 40 — Low-speed engine cylinder oil
- Shell Argina S2 40 — Medium-speed engine oil
- Shell Argina S3 40 — Medium-speed engine oil
- Shell Argina S4 40 — Medium-speed engine oil
- Shell Argina S5 40 — Medium-speed engine oil
- Shell Caprinus XR 40 — High-speed diesel engine oil
- Shell Gadinia AL 40 — Medium-speed engine oil
- Shell Gadinia S3 40 — Medium-speed engine oil
- Shell Mysella S3 N 40 — Gas & dual-fuel engine oil
- Shell Mysella S5 N 40 — Gas & dual-fuel engine oil
- Shell Rotella DD+ 40 — High-speed diesel engine oil
- Shell Sirius X 40 — High-speed diesel engine oil
- Shell Gadus S2 OG 40 — Marine grease
Before changing grade
- Moving one grade up increases film thickness but makes cold pumpability harder.
- Moving one grade down reduces churning losses yet raises the risk of film breakdown under high load.
- The equipment builder's viscosity window should be the reference for any change.
- If the system is not fully drained, the resulting mixed viscosity has to be accounted for.
Price and availability
Contact us for current pricing, stock availability and delivery times for this product group.
Request a quotation