Grease is a critical but often underappreciated lubricant, used wherever oil alone can't stay in place — bearings, chassis points, pins and bushings. Choosing the right grease type can significantly extend component life and reduce maintenance frequency.
What Makes a Grease "Premium"?
Premium greases use higher-quality base oils, refined thickener systems, and advanced additive packages to deliver better water resistance, mechanical stability, and temperature performance than basic general-purpose greases.
Calcium Grease
Calcium-based greases offer excellent water resistance, making them well suited to marine equipment, water pumps and general automotive chassis applications operating in wet or humid conditions. They are cost-effective for general-purpose use.
Sodium Grease
Sodium-based greases have a fibrous structure that provides strong mechanical stability, making them suitable for medium-speed bearing applications. However, they have lower water resistance than calcium or lithium greases, so they're best suited to drier environments.
Lithium Grease
Lithium complex grease is one of the most widely used multi-purpose greases, offering a strong balance of water resistance, thermal stability and mechanical durability. It's a reliable choice for automotive bearings, chassis points and general industrial applications.
Synthetic Grease
Synthetic greases are engineered for extreme conditions — high speeds, very high or low temperatures, and long relubrication intervals. While typically more expensive, synthetic greases can significantly reduce maintenance frequency in demanding applications, often justifying the higher upfront cost.
Understanding NLGI Grade
NLGI (National Lubricating Grease Institute) grades indicate grease consistency, from NLGI 000 (very soft) to NLGI 6 (very hard). Most general industrial and automotive applications use NLGI 2, though your equipment manufacturer's specification should always guide selection.
Choosing the Right Grease
- Consider operating temperature range and speed of the application
- Assess exposure to water, dust or chemical contamination
- Match NLGI consistency grade to equipment manufacturer specifications
- Factor in relubrication frequency and total cost of ownership, not just unit price
Rynol Grease Range
Rynol manufactures calcium, sodium, lithium and synthetic greases across multiple NLGI grades, suitable for automotive, industrial and specialty applications. Explore our full range on the Greases & Specialty Greases page.
Not Sure Which Grease Is Right for You?
Our technical team can help you select the right grease type and grade for your equipment.
