If an analysis of a sample of used engine...

Question 1 / 205eccefa2bacbc34ba4d47908

Question 1 of 205eccefa2bacbc34ba4d47908

If an analysis of a sample of used engine lube oil shows a high concentration of sodium nitrite, this probably indicates that __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47908

If an analysis of a sample of used engine lube oil shows a high concentration of sodium nitrite, this probably indicates that __________.

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🔍 Key Concepts

• Used lube oil analysis and what different contaminants usually mean • The typical source of sodium / nitrite compounds on a diesel or gasoline engine • Differences between problems caused by air filtration, fuel dilution, coolant leaks, and worn rings

💭 Think About

• For each choice, ask yourself: what specific chemical or physical sign would that problem leave in the lube oil? Would it produce sodium nitrite in high concentration? • Think about what is inside engine coolant versus what is in fuel and intake air. Which of those normally contains sodium-based additives? • Which condition would also tend to show up as a change in oil level, oil appearance (color/emulsion), or viscosity along with the chemical indicator?

✅ Before You Answer

• Match sodium / nitrite specifically with the system that commonly uses these compounds as corrosion inhibitors or antifreeze additives. • Eliminate options that would more likely show metal wear particles, soot, or fuel dilution instead of sodium nitrite. • Consider what other symptoms the engineer would probably also notice: rising sump level, milky oil, or loss of coolant in one of the systems.

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Question 1 of 20

If an analysis of a sample of used engine lube oil shows a high concentration of sodium nitrite, this probably indicates that __________.

the air filtration is inadequate

engine coolant is leaking into the lube oil

fuel oil is leaking into the lube oil

the piston rings are excessively worn

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Question 1 / 205eccefa2bacbc34ba4d47908

Question 1 of 205eccefa2bacbc34ba4d47908

If an analysis of a sample of used engine lube oil shows a high concentration of sodium nitrite, this probably indicates that __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47908

If an analysis of a sample of used engine lube oil shows a high concentration of sodium nitrite, this probably indicates that __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed