Which outcome occurs when thermal decomposition initiates in turbocharger lubricant exposed to fuel dilution at high temperatures?

A)Bearing failure due to deposit formation✓

B)Compressor surge from increased viscosity

C)Wastegate malfunction from valve sticking

D)Intercooler damage from increased backpressure

💡 Explanation

Thermal decomposition in lubricant, exacerbated by fuel dilution and high temperatures, leads to polymerization and deposit formation on bearing surfaces, resulting in lubrication starvation impacting its load carrying ability. Therefore bearing failure results from deposit formation, rather than surge, malfunction, or damage, which require different failure mechanisms.

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Which outcome occurs when thermal decomposition initiates in turbocharger lubricant exposed to fuel dilution at high temperatures?

💡 Explanation

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