Which of the following statements is true...

🔍 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.

Which of the following statements is true concerning the centrifuging of lubricating oil?

Centrifuging is more effective with inhibited oils than straight mineral oils.

Centrifuging is more efficient when the oil is preheated prior to centrifuging.

Silicones are water soluble and easily removed by centrifuging.

Centrifuging will purge the oil of various contaminants, including acids and alkalis.

🔍 Key Concepts

💭 Think About

✅ Before You Answer