🔍 Key Concepts

• Specific gravity (Q) of the oil as shown on the vertical scales of MO-0113 • Regulating ring size (Ø) curves labeled 86, 89, 92, 95, 99, 104, 110, 117, 126 • Following one constant separating temperature (vertical line) and comparing which ring sizes match different specific gravities

💭 Think About

• Pick a single separating temperature (for example 60°C or 140°F). As you move from a heavier oil (higher specific gravity, near 1.0) down to a lighter oil (lower specific gravity, near 0.80), do the intersecting regulating ring curves go toward larger or smaller Ø numbers? • Compare two points at the same temperature: one at Q = 0.96 and one at Q = 0.82. Which regulating ring sizes do they fall on, and what does that say about the trend? • Which choices incorrectly mention viscosity or say the relationship only matters in the "initial design" stage, even though the chart is clearly intended to guide day‑to‑day ring selection?

✅ Before You Answer

• At one fixed temperature, verify whether higher specific gravity oils correspond to smaller or larger Ø ring numbers on the chart. • Confirm that the answer option you choose talks about specific gravity vs. ring size, not viscosity or design stages. • Make sure your chosen statement matches the overall trend of the MO‑0113 curves for all temperatures, not just one point.