The oxidation by-products forming in diesel...

Question 1 / 205eccefa2bacbc34ba4d47903

Question 1 of 205eccefa2bacbc34ba4d47903

The oxidation by-products forming in diesel engine lube oil can cause __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47903

The oxidation by-products forming in diesel engine lube oil can cause __________.

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🔍 Key Concepts

• How oxidation affects diesel engine lube oil over time • Common contaminants and deposits found in used lube oil • Differences between pitting, sludge, and varnish in engine parts

💭 Think About

• Think about what happens to lube oil when it is exposed to high temperature and air for long periods • Consider which types of engine damage or deposits are commonly linked to degraded or oxidized oil • Ask yourself whether oxidation typically leads to just one kind of problem, or if it can create multiple types of damage and deposits

✅ Before You Answer

• Be clear on what pitting is (surface damage to metal) versus sludge (soft deposits) versus hard varnish (hard, sticky film) • Recall what maintenance manuals say about oxidation by-products in lube oil and the kinds of deposits they form • Verify whether oxidation by-products are usually limited to one effect or can contribute to several different problems in the lubrication system

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Question 1 of 20

The oxidation by-products forming in diesel engine lube oil can cause __________.

pitting

sludge

hard varnish

All of the above

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