Excessive engine oil consumption
Diagnostic procedure
1.
Check for oil leaks.
2.
Check for worn valve guide(s);
or
worn valve seal(s)
.
3.
Check for a damaged or worn piston ring(s)
.
4.
Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.)
.
Also check for
Check the maintenance records as engine oil that is worn out burns off at a higher rate