HIGHER-VISCOSITY NEUTRAL COMPARISON
500N vs SN500 Base Oil
Group II 500N and Group I SN500 are not automatically equivalent. Their refining route, viscosity profile, composition tendencies, solvency and commercial role must be evaluated against the intended lubricant and current batch documents.
Do 500N and SN500 Perform Identically?
No. Both names indicate higher-viscosity neutral grades, but the products differ in group classification and reported test results. A formulator should not substitute one for the other on name alone.
REFERENCE REPORT RESULTS
500N and SN500 Technical Data
These values reproduce the supplied BAKLUCK inspection reports and describe the reported samples, not every product in the wider Group I or Group II family.
| Test item | Group II 500N | Method | Group I SN500 | Method |
|---|---|---|---|---|
| Kinematic viscosity at 40°C, mm²/s | 75.86 | GB/T 265 | 101.48 | GB/T 265 |
| Kinematic viscosity at 100°C, mm²/s | 9.95 | GB/T 2541 | 11.48 | GB/T 265 |
| Viscosity index | 112 | GB/T 2541 | 100 | GB/T 2541 |
| Flash point (open cup), °C | 236 | GB/T 3536 | 232 | GB/T 3536 |
| Density at 20°C, kg/m³ | 870 | GB/T 1884 | 864 | GB/T 1884 |
| Pour point, °C | -22 | GB/T 3535 | -18 | GB/T 3535 |
| Demulsibility (40–37–3 ml) at 82°C, min | 6 | GB/T 7305 | 7 | 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.
Compare Formulation Role, Stability and Solvency
Refining route influences sulfur, saturates, color, viscosity-index and oxidation-stability tendencies. Group I SN500 can provide solvency that may be useful with some additive packages, while Group II 500N may fit other stability, color or volatility objectives.
Formulation flexibility, processing behavior, availability and cost vary by market and batch. Current documents plus finished-fluid testing should govern the selection.
500N vs SN500 FAQ
Can 500N replace SN500 directly?
Not on the basis of the name. Compare current product data, additive response, processing behavior and finished-fluid results before any substitution.
Which reported sample is more viscous?
The supplied reference reports list different KV40 and KV100 results. Use the actual table values and current batch documents rather than assuming equivalence.
When can SN500 solvency be useful?
SN500 solvency may assist some additive systems, but the benefit is chemistry-specific and should be confirmed in the complete blend.
Is 500N universally preferred for high-viscosity engine oil?
No. Technical fit depends on the full base-oil slate, additive package, viscosity modifier, performance tests, availability and cost.
Can I request current batch information?
Yes. Request the applicable COA, TDS and SDS for review before sample evaluation or purchasing.
Request 500N or SN500 Documents
Share the intended application, required grade, quantity range, packing and destination.