🔍 Key Concepts

• Centrifugal purifiers vs. clarifiers and what they actually remove from lube oil • Effect of temperature and viscosity on centrifuge separation efficiency • Which contaminants (water, sludge, solids, some additives) are removed by centrifuging vs. which require chemical treatment or replacement

💭 Think About

• Think about how a centrifuge separates two or more substances. How does viscosity of the oil affect the rate at which water and solids move outward in the bowl? • Look at each option and ask: is this a physical separation (by density) or does it claim removal of something that would require a chemical change or reaction? • For additives like silicones or inhibitors, are they usually meant to stay dissolved in the oil, or be easily removed in normal purifier operation?

✅ Before You Answer

• Verify which conditions (especially oil temperature/viscosity) the manufacturer recommends for efficient lube oil centrifuging. • Check whether acids and alkalis are normally neutralized/treated chemically or physically spun out by a purifier. • Confirm whether substances like silicones and inhibitors are typically water-soluble or oil-soluble, and whether a centrifuge is designed to remove them.