Glycerol Monooleate (GMO) Friction Modifier
Glycerol monooleate (GMO) is a cost-effective, ashless friction modifier derived from oleic acid and glycerol, widely used in automotive and industrial lubricants to reduce stick-slip behavior and improve fuel efficiency. Its polar head group adsorbs strongly onto metal surfaces, forming a boundary-lubrication film that reduces the coefficient of friction in low-speed, high-load contacts. GMO is fully biodegradable and compatible with both mineral and synthetic base oils.
Technical Specifications
| acid value | ≤2.0 mg KOH/g |
| appearance | Light yellow to amber liquid or semi-solid |
| hydroxyl value | 145–175 mg KOH/g |
| flash point (COC) | >200 °C |
| saponification value | 170–185 mg KOH/g |
| GMO content (monoglyceride) | ≥90 wt% |
Applications
- Automatic transmission fluids (ATF) to control lock-up clutch shudder
- Manual transmission and axle oils for improved shift feel and efficiency
- Passenger car engine oils as ashless friction modifier supplement
- Industrial hydraulic and slide-way oils requiring stick-slip prevention
- Metalworking fluids as boundary lubrication additive
Key Features
- Ashless, metal-free formulation contributes no ash-forming elements to combustion
- Strong polar adsorption on metal surfaces provides effective boundary lubrication
- Biodegradable and derived from renewable raw materials meeting sustainability goals
- Cost-effective friction modifier with broad compatibility across base oil types
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