Group I — solvent neutral & bright stock
Conventional mineral blending stocks. SN and bright-stock numbers are trade designations; agree actual viscosity and producer specifications.
View grades →Group II / II+ — hydroprocessed
Hydroprocessed base stocks selected by viscosity, sulfur, saturates and viscosity index. II+ is a market label, not a separate API group.
View grades →Group III / III+ & GTL
High-viscosity-index base stock enquiries; III+ is a market description and GTL identifies a manufacturing route, not a separate API group.
View grades →Group IV — PAO
Polyalphaolefin base stocks for validated synthetic lubricant formulations; a grade label does not fix all properties.
View grades →Group V — ester base stocks
Ester chemistry, viscosity and hydrolytic behaviour must be specified for the proposed formulation.
View grades →Group V — PAG & other synthetics
Chemistry-led enquiries with explicit solubility, miscibility and seal-compatibility requirements.
View grades →Naphthenic base oils
Naphthenic base stocks selected by measured properties and solvency; API classification requires the actual product data.
View grades →Re-refined base oils — RRBO
Re-refining describes origin and process, not an API group. Require batch quality, traceability and confirmed classification.
View grades →All base oil enquiry profiles
BO-001BASE
Group I SN 70SN 70 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-002BASE
Group I SN 100SN 100 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-003BASE
Group I SN 150SN 150 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-004BASE
Group I SN 200SN 200 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-005BASE
Group I SN 300SN 300 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-006BASE
Group I SN 400SN 400 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-007BASE
Group I SN 500SN 500 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-008BASE
Group I SN 600SN 600 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-009BASE
Group I SN 650SN 650 solvent-neutral base oil enquiry for lubricant blending. State the required producer viscosity window; the number is not an ISO VG grade.Product profile →BO-010BASE
Bright Stock 150High-viscosity residual base stock enquiry for qualified heavy lubricant and grease formulations. BS 150 does not mean 150 cSt at 100°C.Product profile →BO-011BASE
Group II 70N70N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-012BASE
Group II 100N100N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-013BASE
Group II 150N150N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-014BASE
Group II 220N220N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-015BASE
Group II 500N500N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-016BASE
Group II 600N600N hydroprocessed neutral base stock enquiry. N and R naming systems vary by refiner and are not automatically interchangeable.Product profile →BO-017BASE
Group II+ High VI Base OilMarket-labelled II+ enquiry requiring a named viscosity cut and measured viscosity index; confirm API classification from actual properties.Product profile →BO-018BASE
Group III 3 cStGroup III enquiry around nominal 3 cSt at 100°C. Contract limits and formulation support require producer confirmation.Product profile →BO-019BASE
Group III 4 cStGroup III enquiry around nominal 4 cSt at 100°C. Contract limits and formulation support require producer confirmation.Product profile →BO-020BASE
Group III 6 cStGroup III enquiry around nominal 6 cSt at 100°C. Contract limits and formulation support require producer confirmation.Product profile →BO-021BASE
Group III 8 cStGroup III enquiry around nominal 8 cSt at 100°C. Contract limits and formulation support require producer confirmation.Product profile →BO-022BASE
Group III+ High VI Base OilHigh-VI enquiry under a market designation; specify viscosity, volatility and cold-temperature performance rather than relying on the plus label.Product profile →BO-023BASE
GTL Base Oil 4 cStGas-to-liquids-derived base stock enquiry around nominal 4 cSt at 100°C; actual grade, source and API group must be documented.Product profile →BO-024BASE
GTL Base Oil 8 cStGas-to-liquids-derived base stock enquiry around nominal 8 cSt at 100°C; actual grade, source and API group must be documented.Product profile →BO-025BASE
PAO 2Polyalphaolefin grade 2 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-026BASE
PAO 4Polyalphaolefin grade 4 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-027BASE
PAO 5Polyalphaolefin grade 5 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-028BASE
PAO 6Polyalphaolefin grade 6 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-029BASE
PAO 8Polyalphaolefin grade 8 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-030BASE
PAO 10Polyalphaolefin grade 10 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-031BASE
PAO 40Polyalphaolefin grade 40 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-032BASE
PAO 100Polyalphaolefin grade 100 enquiry for synthetic blending. Nominal viscosity convention is at 100°C; verify the actual TDS and blend compatibility.Product profile →BO-033BASE
Diester Base StockEster base stock enquiry for a qualified formulation. ISO VG, where stated, refers to a viscosity band at 40°C, not an API group or performance approval.Product profile →BO-034BASE
Polyol Ester Base StockEster base stock enquiry for a qualified formulation. ISO VG, where stated, refers to a viscosity band at 40°C, not an API group or performance approval.Product profile →BO-035BASE
Complex Ester Base StockEster base stock enquiry for a qualified formulation. ISO VG, where stated, refers to a viscosity band at 40°C, not an API group or performance approval.Product profile →BO-036BASE
Synthetic Ester ISO VG 32 EnquiryEster base stock enquiry for a qualified formulation. ISO VG, where stated, refers to a viscosity band at 40°C, not an API group or performance approval.Product profile →BO-037BASE
Synthetic Ester ISO VG 68 EnquiryEster base stock enquiry for a qualified formulation. ISO VG, where stated, refers to a viscosity band at 40°C, not an API group or performance approval.Product profile →BO-038BASE
Water Soluble PAG Base StockSpecialty base fluid enquiry requiring exact chemical family and viscosity. No universal miscibility or drop-in replacement is implied.Product profile →BO-039BASE
Water Insoluble PAG Base StockSpecialty base fluid enquiry requiring exact chemical family and viscosity. No universal miscibility or drop-in replacement is implied.Product profile →BO-040BASE
Oil Soluble PAG Base StockSpecialty base fluid enquiry requiring exact chemical family and viscosity. No universal miscibility or drop-in replacement is implied.Product profile →BO-041BASE
Alkylated Naphthalene Base StockSpecialty base fluid enquiry requiring exact chemical family and viscosity. No universal miscibility or drop-in replacement is implied.Product profile →BO-042BASE
Silicone Base FluidSpecialty base fluid enquiry requiring exact chemical family and viscosity. No universal miscibility or drop-in replacement is implied.Product profile →BO-043BASE
Naphthenic Base Oil ISO VG 10Viscosity-target enquiry for a naphthenic base stock, subject to refiner availability and actual test results; not a guaranteed stock grade.Product profile →BO-044BASE
Naphthenic Base Oil ISO VG 22Viscosity-target enquiry for a naphthenic base stock, subject to refiner availability and actual test results; not a guaranteed stock grade.Product profile →BO-045BASE
Naphthenic Base Oil ISO VG 32Viscosity-target enquiry for a naphthenic base stock, subject to refiner availability and actual test results; not a guaranteed stock grade.Product profile →BO-046BASE
Naphthenic Base Oil ISO VG 68Viscosity-target enquiry for a naphthenic base stock, subject to refiner availability and actual test results; not a guaranteed stock grade.Product profile →BO-047BASE
Naphthenic Base Oil ISO VG 100Viscosity-target enquiry for a naphthenic base stock, subject to refiner availability and actual test results; not a guaranteed stock grade.Product profile →BO-048BASE
RRBO Light NeutralRe-refined neutral base oil enquiry requiring a named viscosity target and independent batch-quality review. API group must be confirmed, never inferred from recycled origin.Product profile →BO-049BASE
RRBO Medium NeutralRe-refined neutral base oil enquiry requiring a named viscosity target and independent batch-quality review. API group must be confirmed, never inferred from recycled origin.Product profile →BO-050BASE
RRBO Heavy NeutralRe-refined neutral base oil enquiry requiring a named viscosity target and independent batch-quality review. API group must be confirmed, never inferred from recycled origin.Product profile →