LIGHT NEUTRAL BASE OIL COMPARISON
150N vs SN150 Base Oil
Group II 150N and Group I SN150 are not automatically equivalent. Both are lighter neutral base oils, but their refining route, composition tendencies, reported properties and formulation behavior should be reviewed before substitution or new-product development.
Are 150N and SN150 the Same?
No. The names describe broadly similar viscosity-positioning conventions, not identical chemistry or interchangeable finished-fluid behavior. The 150N offered here is a Group II grade; SN150 is a Group I solvent-neutral grade.
REFERENCE REPORT RESULTS
150N and SN150 Technical Data
The numbers below are reference results from the supplied BAKLUCK inspection reports, not universal properties of every Group II 150N or Group I SN150 product.
| Test item | Group II 150N | Method | Group I SN150 | Method |
|---|---|---|---|---|
| Kinematic viscosity at 40°C, mm²/s | 30.3 | GB/T 265 | 29.62 | GB/T 265 |
| Kinematic viscosity at 100°C, mm²/s | 5.73 | GB/T 265 | 5.31 | GB/T 265 |
| Viscosity index | 133 | GB/T 2541 | 112 | GB/T 2541 |
| Flash point (open cup), °C | 226 | GB/T 3536 | 218 | GB/T 3536 |
| Pour point, °C | -32 | GB/T 3535 | -14 | GB/T 3535 |
| CCS viscosity at -30°C, mPa·s | 3096 | ASTM D5293 | Not reported | — |
| Evaporation loss (Noack), % | 7.4 | ASTM D5800 | Not reported | — |
| Density at 20°C, kg/m³ | Not reported | GB/T 1884 | 848 | GB/T 1884 |
| Demulsibility (40–37–3 ml) at 54°C, min | Not reported | — | 3 | GB/T 7305 |
The values shown are reference test results from the provided product inspection report and may vary by batch. Final product specifications and batch values are subject to the applicable BAKLUCK TDS and COA.
Refining, Solvency and Formulation Differences
Group II production generally produces different sulfur, saturates, color, viscosity-index and oxidation-stability tendencies from Group I solvent refining. Group I SN150 may offer useful solvency for some additive systems; Group II 150N may support other volatility, color or stability objectives.
Formulation flexibility depends on the complete base-stock slate, additive response, viscosity modifier and finished-fluid testing. Availability, processing behavior and total cost should be assessed alongside technical performance.
150N vs SN150 FAQ
Can 150N replace SN150 directly?
Not without technical review. Compare current TDS and COA data, additive compatibility, processing and finished-fluid test results before changing the base stock.
Which grade has the higher reported viscosity index?
In the supplied reference reports, the listed 150N result is higher. This is a batch reference and should not be treated as a universal family value.
Why can SN150 solvency matter?
Group I solvency can support additive handling in some formulations. The actual benefit depends on the additive chemistry and the full base-oil blend.
Is 150N always better for engine oil?
No. Selection depends on the formulation target, additive system, required tests, availability and cost rather than a universal ranking.
Which documents should I compare?
Compare the current TDS, batch COA and SDS, then verify the proposed finished formulation through the appropriate laboratory program.
Request 150N or SN150 Documents
Tell us the intended application, grade, quantity range, packing and destination.