Blending & Formulation Suite
JobbersWorld Decision Tools
Blending & Formulation Suite
Practical technical screening tools for viscosity blending, viscosity index, blend economics, base oil substitution, and treat-rate impact.
Important: These tools are for informational, planning, and screening purposes only.
They do not replace laboratory testing, formulation review, OEM/specification validation,
additive supplier guidance, regulatory review, or commercial judgment.
For full assumptions and limitations, see the
Comprehensive Tool Disclaimer →
Viscosity Blending Calculator
Purpose:
Estimate the blended viscosity of two or three components using a Refutas-style viscosity blending method rather than simple linear averaging.
When to Use:
Use this when estimating the viscosity of a proposed base oil blend or when comparing alternative blend ratios.
How to Use:
Enter each component viscosity at the same temperature, usually KV40 or KV100, and enter the blend percentage for each component.
Estimate the blended viscosity of two or three components using a Refutas-style viscosity blending method rather than simple linear averaging.
When to Use:
Use this when estimating the viscosity of a proposed base oil blend or when comparing alternative blend ratios.
How to Use:
Enter each component viscosity at the same temperature, usually KV40 or KV100, and enter the blend percentage for each component.
Viscosity Index Calculator
Purpose:
Estimate viscosity index from kinematic viscosity at 40°C and 100°C.
When to Use:
Use this when screening a base oil, blend, or finished lubricant for temperature-viscosity performance.
How to Use:
Enter KV40 and KV100 values from test data, supplier data, or a screening estimate.
Estimate viscosity index from kinematic viscosity at 40°C and 100°C.
When to Use:
Use this when screening a base oil, blend, or finished lubricant for temperature-viscosity performance.
How to Use:
Enter KV40 and KV100 values from test data, supplier data, or a screening estimate.
Blend Economics Calculator
Purpose:
Estimate finished lubricant cost per gallon from base oils, additive treat rate, packaging, freight, labor, and other costs.
When to Use:
Use this when evaluating formulation economics, comparing blend options, or estimating cost impact from base oil or additive changes.
How to Use:
Enter each component percentage and cost. The tool calculates raw material cost, finished cost, and total cost at the selected volume.
Estimate finished lubricant cost per gallon from base oils, additive treat rate, packaging, freight, labor, and other costs.
When to Use:
Use this when evaluating formulation economics, comparing blend options, or estimating cost impact from base oil or additive changes.
How to Use:
Enter each component percentage and cost. The tool calculates raw material cost, finished cost, and total cost at the selected volume.
Base Oil Substitution Impact Tool
Purpose:
Compare a current base oil slate against a proposed substitute slate and estimate viscosity, VI, cost, and Group III exposure changes.
When to Use:
Use this when considering whether to reduce Group III exposure, substitute a different base oil, or evaluate a lower-cost formulation option.
How to Use:
Enter current and proposed base oil viscosity, VI, cost, and blend percentages. The tool provides directional risk flags and cost impact.
Compare a current base oil slate against a proposed substitute slate and estimate viscosity, VI, cost, and Group III exposure changes.
When to Use:
Use this when considering whether to reduce Group III exposure, substitute a different base oil, or evaluate a lower-cost formulation option.
How to Use:
Enter current and proposed base oil viscosity, VI, cost, and blend percentages. The tool provides directional risk flags and cost impact.
Current Slate
Proposed Slate
Shared Costs & Targets
Treat Rate Sensitivity Tool
Purpose:
Estimate how changes in additive treat rate affect cost per gallon and total cost over a selected volume.
When to Use:
Use this when reviewing additive treat-rate changes, additive cost increases, or alternative additive packages.
How to Use:
Enter current treat rate, proposed treat rate, additive cost, and volume.
Estimate how changes in additive treat rate affect cost per gallon and total cost over a selected volume.
When to Use:
Use this when reviewing additive treat-rate changes, additive cost increases, or alternative additive packages.
How to Use:
Enter current treat rate, proposed treat rate, additive cost, and volume.