Group III Base Oil
API Group III Base Oil
Very high viscosity index severely hydroprocessed base stock.
01 Overview
Group III base oils carry a viscosity index above 120 with very low volatility, and are the foundation of synthetic and semi-synthetic finished lubricants. They allow formulators to reach low-viscosity fuel-economy grades that Group I and II cannot support.
02 Types we supply
Each entry below is a grade — a specific version of this product, made to its own recipe for a particular use. If you are not sure which one you need, tell us what you are making and we will advise.
- 4 cSt
- 6 cSt
- 8 cSt
03 Typical specification
These figures are approximate and differ slightly between producers. The binding numbers are the ones on the certificate of analysis for your actual shipment, which we send with every quotation.
04 Applications
- Full and semi-synthetic engine oils
- Low viscosity fuel economy grades (0W/5W)
- Premium ATF and driveline fluids
- Long-drain industrial oils
- High performance greases
- Specialty and metalworking fluids
05 Industries served
06 Packaging options
- 180 / 210 kg steel drums
- Flexitank (20–22 MT)
- ISO tank
07 Supply & export note
Available primarily through our international supplier network. Lead times are longer than Group I and II material and are stated explicitly on every offer rather than estimated optimistically.