3K Airplane Systems - Oil System

Question 0

2. What are the minimum and maximum oil capacities?

Answer 0

The minimum oil capacity is 5 quarts of oil. The maximum oil capacity is 8 quarts.

Question 1

1. Briefly describe the engine oil system.

Answer 1

Aircraft engine lubrication and oil for propeller governor operation is supplied from a sump on the bottom of the engine. Oil sump capacity is 8 quarts.

Question 2

3. What are the minimum and maximum oil temperatures and pressures?

Answer 2

Oil temperature—100°F to 245°F

Oil pressure—25 PSI (minimum for idling), 60 – 90 PSI (green arc), 115 PSI (red line)

Question 3

4. What are two types of oil available for use in your airplane?

Answer 3

Mineral oil—Also known as non-detergent oil; contains no additives. This type of oil is normally used after an engine overhaul or when an aircraft engine is new; normally used for engine break-in purposes.
Ashless dispersant—Mineral oil with additives; high antiwear properties along with multi-viscosity (ability to perform in wide range of temps). Also picks up contamination and carbon particles and keeps them suspended so that buildups and sludge do not form in the engine

Question 4

5. What type of oil is recommended for this engine (for summer and winter operations)?

Answer 4

Ashless dispersant oil, usually SAE 20W-50 during the colder months. For temperatures above 60°F (summer), use SAE 40 or SAE 50