Group III
Base Oil Group III 4 cSt
Group III 4 cSt base oil for passenger-car engine oils and light industrial lubricants.
What is Base Oil Group III 4 cSt?
Group III 4 cSt base oil is the light-to-mid viscosity class supplied by Synergysol Trading for modern engine-oil formulas. The name is the kinematic viscosity class at 100°C. API Group III base oil is severely hydroprocessed: viscosity index of 120 or higher, saturates of at least 90%, and sulfur of 0.03% or below.
Passenger-car engine oils use this class as the main light stock. Automatic transmission fluids and light industrial oils use it for the same reason. Group II N150 is the Group II grade in a similar commercial band. Group I SN-150 is published at 5.4–7 cSt at 100°C and viscosity index 95.
Applications
Synergysol Trading supplies Group III 4 cSt base oil for passenger-car engine oils and light industrial lubricants.
Passenger-car engine oils. Gasoline and light diesel formulas use 4 cSt Group III when the approval calls for a viscosity index of 120 or higher.
Automatic transmission fluids. ATF blends name this viscosity class when the base oil is Group III.
Light hydraulic and industrial oils. Light industrial lubricants that have moved up from Group II use 4 cSt Group III.
Named 4 cSt formulas. Where the specification says Group III 4 cSt base oil, this is the grade on the order.
Specification
Appearance — Visual — Bright & Clear
Kinematic viscosity at 40°C — ASTM D445 — 19.7 — cSt
Kinematic viscosity at 100°C — ASTM D445 — 41.10 — cSt
Viscosity index — ASTM D2270 — 124
Flash point (COC) — ASTM D92 — 220 — °C
Pour point — ASTM D5950 — −20 — °C
Density at 15°C — ASTM D4052 — 0.8350 — kg/L
Color — ASTM D1500 — L0.5
Saturates — ASTM D2007 — >99 — wt%
Sulfur — ASTM D5453 — 1 — wt ppm
Noack volatility — ASTM D5800 — 14.7 — wt%
Aromatics — ASTM D2007 — <1 — wt%
These are the results held for this grade. The certificate of analysis supplied with the shipment applies to that cargo.
Other grades in this range
These are other grades Synergysol Trading supplies. The figures in this section belong to those grades.
2 cSt is the lighter class. 6 cSt is the next heavier class. Group II N150 and Group I SN-150 are the other light neutrals.
Frequently asked questions
What is Group III 4 cSt used for?
Passenger-car engine oils, automatic transmission fluids, and light industrial lubricants that specify a 4 cSt Group III base oil.
What does Group III mean?
API Group III oils are severely hydroprocessed, with a viscosity index of 120 or higher, saturates of at least 90%, and sulfur of 0.03% or below.
How does 4 cSt compare with Group II N150?
Group III is specified when the formula needs a viscosity index of 120 or higher. N150 is Group II.
What are the published results for Group III 4 cSt?
Kinematic viscosity is 19.7 cSt at 40°C and 41.10 cSt at 100°C. Viscosity index is 124, flash point 220°C, pour point −20°C, Noack volatility 14.7 wt%, saturates >99 wt%, and sulfur 1 wt ppm.
How do I request Group III 4 cSt?
Send Group III 4 cSt, the quantity, packing, and delivery point to info@synergysoltrading.com. Phone +971 4 553 2197 or +971 50 669 3010.
Related grades
Request this grade
Email info@synergysoltrading.com with the grade, quantity, packing, and delivery point.
+971 4 553 2197 · +971 50 669 3010
Ontario Tower, Floor 22, Unit 2202, Business Bay, Dubai, U.A.E.