How are commercial aviation oils classified by viscosity?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the Aviation Maintenance Technician, Second Class (AMT2) Exam. Use flashcards and multiple choice questions, with hints and explanations provided for each question. Prepare for success!

Multiple Choice

How are commercial aviation oils classified by viscosity?

Explanation:
Oils are classified by viscosity using numeric grades, such as 80, 100, or 140. Those numbers reflect the oil’s viscosity at operating temperature (typically 100°C), with higher numbers indicating thicker oil that provides a stronger lubrication film under heat and load, and lower numbers indicating thinner oil that flows more easily at lower temperatures. This numerical system lets you match the oil to engine tolerances and operating conditions, unlike color, odor, or batch number, which don’t indicate viscosity.

Oils are classified by viscosity using numeric grades, such as 80, 100, or 140. Those numbers reflect the oil’s viscosity at operating temperature (typically 100°C), with higher numbers indicating thicker oil that provides a stronger lubrication film under heat and load, and lower numbers indicating thinner oil that flows more easily at lower temperatures. This numerical system lets you match the oil to engine tolerances and operating conditions, unlike color, odor, or batch number, which don’t indicate viscosity.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy