Excessive Engine Oil Consumption
Excessive engine oil consumption
Verify that the engine oil filler cap, oil drain bolt, and oil filter are tight.
Check for oil leaks.
Check for worn valve guide(s) Valve Stem-to-Guide Clearance Inspection or worn valve seal(s) Valve, Spring, and Valve Seal Removal.
Check for damaged or worn piston ring(s) Service and Repair.
Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) Testing and Inspection.