PETRONAS ETRO 4 is a high quality Group III base oil, manufactured from a unique feedstock by using a proprietary hydrotreatment - and wax isomerization process and hydrofinished to a colourless liquid. The base oil is highly isoparaffinic and exhibits a very high viscosity index as well as superior low-temperature performance. It has an excellent viscosity-volatility relationship. PETRONAS ETRO 4 is registered by NSF for categories H1 (use as lubricant with incidental food contact) and HX-1 (ingredient for use in lubricants with incidental food contact).

• Viscosity at 100°C: 4,21
• Viscosity at 40°C: 18,95
• Viscosity Index: 129
• Noack: 13,8
• CCS Viscosity at -30°C: 1380