Technician A says following turbo use, turbo bearings cool quickly when the engine is shut off. Technician B says synthetic oil burns at a lower temperature so it is the oil of choice for use with a turbocharger. Who is right?
A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question

Quizplus · Accepted Answer

Technician A is incorrect because turbo bearings can retain heat for a while after the engine is shut off, potentially causing oil to overheat and degrade if the engine does not continue to circulate oil to cool the turbo. Technician B is incorrect because while synthetic oil does have better high-temperature properties than conventional oil, saying it burns at a lower temperature is misleading; the advantage of synthetic oil in turbocharged engines is its ability to withstand higher temperatures without breaking down, not a lower burn temperature.

Technician a Says Following Turbo Use, Turbo Bearings Cool Quickly