ETRO 4 is a premium Group III base oil made from unique feedstock using proprietary hydrotreatment, wax isomerization, and hydrofinishing for a colorless, highly isoparaffinic liquid. NSF registered for H1 and HX-1 (incidental food contact).

Viscosity at 100°C: 4.21 mm2/s
Viscosity at 40°C: 18.95 mm2/s
Viscosity Index: 129
Noack: 13.8%
CCS Viscosity at -30°C: 1380 mPa.s

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