The results of an oil sampling of a diesel engine show high silicate levels. Which of the following could be the cause?
A)Worn engine bearing and bushings"
B)Worn cylinders"
C)Antifreeze or leaking air intake system
D)Poor combustion quality or over-extended oil service intervals"

Question

Quizplus · Accepted Answer

High silicate levels in oil are often indicative of contamination from antifreeze or a leaking air intake system, which can introduce silicates into the oil.

The Results of an Oil Sampling of a Diesel Engine