SN150 Base Oil

Light neutral solvent stock for low-viscosity blends

SN150 is the light end of the solvent-neutral range and it is bought on four numbers: kinematic viscosity at 40°C (typically 28–32 cSt) and at 100°C (roughly 5.0–5.6 cSt), viscosity index (≥ 95 for Group I, ≥ 100 for hydrotreated Group II), flash point (≥ 200°C COC) and pour point (≤ -6°C, tighter on Group II). ASTM colour is the fifth variable and the one that decides whether a lot is fit for a light-coloured finished oil — Group I SN150 typically runs ≤ 1.5 while Group II material comes in water-white at ≤ 0.5 with sulphur under 0.03% and saturates above 90%. That sulphur and saturates gap is the whole Group I vs Group II decision: Group II costs more but gives you oxidation stability and colour that a Group I solvent stock cannot reach.

A blender picks SN150 over SN500 when the finished viscosity target sits low and the formulation needs a thin carrier rather than body — hydraulic oils, light spindle and circulating oils, ATF and gear-oil dilution, metalworking fluids, process and white-oil feedstock, and as the cutting stock that pulls an SN500-heavy blend down to grade. It is almost never the sole base stock in an engine oil; it is the component you meter in to hit KV100. CBIL brokers virgin Group I and Group II SN150 from Gulf, South Korean and Singaporean refiners with COA and SGS verification of viscosity, VI, flash, pour and colour at load port. Supply is arranged in 24 MT flexitanks, ISO tanks and new steel drums on FOB, CFR and CIF terms — send your KV100 window, VI floor and Group requirement and we will confirm against current allocation.