Lubricating Oil - Densities vs. Temperature

This tool calculates correlations for lubricating oil density and temperature based on ASTM D 1250-04 and IP 200/04 standards. Each colored line represents a lubricant with a given density at a given reference temperature.

Key Features:

• Calculate density changes across temperature ranges
• Determine volume correction factors
• Use volume correction factors to convert volumes between different temperatures

Important Notes:

• Volume increases with increasing temperature
• Base temperature reference: 15°C (59°F)
• For API gravity values, use the API-to-gravity converter

How It Works:

If you know the lubricating oil density at one temperature, you can determine its density at another temperature using the provided correlations and volume correction factors.

Example 1: Converting Volume from 150°C to 15°C

Problem: You have 100 liters of lubricating oil with a density of 954 kg/m³ at 150°C. What is the volume at 15°C?

Solution:

• The brown line in the chart represents this lubricating oil
• Using the volume correction factor at 150°C: approximately 1.09
• Volume at 15°C = 100 liters ÷ 1.09 = 92 liters
• Check: Lowest volume at lowest temperature ✓

Example 2: Converting Volume from 15°C to 200°C

Problem: You have 10 m³ of lubricating oil with a density of 941 kg/m³ at 15°C. What is the volume at 200°C?

Solution:

• The dark blue line represents this lubricating oil
• Using the volume correction factor at 200°C: approximately 1.145
• Volume at 200°C = 10 m³ × 1.145 = 11.45 m³
• Check: Lowest volume at lowest temperature ✓