Technician A says that a new engine should be driven steady and allowed to idle as much as possible during the first 500 miles. Technician B says that it is important to have the oil changed after the first 500 miles of use on a rebuilt engine. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician B is correct because changing the oil after the first 500 miles on a rebuilt engine helps remove any contaminants or metal particles that may have been introduced during the rebuilding process, ensuring the longevity and proper functioning of the engine. Technician A's advice is outdated; modern engine break-in procedures often recommend varying the engine speed and load to ensure all parts are properly seated and lubricated.

Technician a Says That a New Engine Should Be Driven