Base Oil 150N-HVI

About This Product

Turbine oil is a demanding test for any base stock. Oils in steam and gas turbines stay in service for years in large sumps and are assessed on oxidation resistance, how quickly they shed water and how readily they release entrained air, and each of those properties starts with the cleanliness of the base oil. Base Oil 150N-HVI is chosen for that work and, for similar reasons, for circulating oils in paper mills, rolling mills and central lubrication systems. Engine oil blenders use it as the main base for passenger car and light-duty diesel oils, and as the light partner to the 500N-HVI in heavy-duty diesel formulations. Hydraulic and general machinery oils make up the rest of its outlets.

Two limits deserve attention from turbine and circulating oil formulators. Conradson carbon residue (ASTM D-189), max 0.10 wt %, indicates how much coke would form if the oil were heated to breakdown, and a low figure translates into fewer varnish and sludge deposits on hot metal through a long service interval. A total acid number of max 0.05 mg KOH/g shows that oxidation by-products, which would consume inhibitor and shorten the oil's life, are essentially absent on delivery. The other limits are kinematic viscosity 28.5 – 32.0 cSt at 40 °C, viscosity index min 95, open cup flash point min 180 °C, pour point max -6 °C and ASTM colour max 2.0.

The grade is drawn from the middle side streams of the vacuum unit and refined by solvent extraction and dewaxing. Because its viscosity sits close to the centre of the industrial grades in widest use, it is frequently the highest-volume base oil a blender handles, and the other neutrals are best understood as lighter or heavier steps away from it. On its own it can lubricate many circulating systems, yet it is light enough to serve as the backbone of an engine oil.

Moving from the 100N-HVI to this grade buys a thicker oil film and a slightly higher flash point, with some loss of mobility in the cold. It is the heaviest HVI neutral still specified at 40 °C; the 400N-HVI and 500N-HVI are specified at 100 °C. For heavier industrial grades that stay mainly within the HVI class, blenders typically add one of those two neutrals or Bright Stock BS-MVI.

The grade is of Pakistan origin, with volumes taken from a shared lube base oil output of 16,500 MT per month. Delivery options range from bulk parcels and ISO tanks to flexi bags, IBC tanks and drums, and BG Petro Chemicals can quote for custom packaging. Each lot travels with its certificate of analysis, and the TDS and SDS are available on request.