GM 5.3L V8
5.3L oil consumption diagnosis
Measuring and diagnosing oil consumption on the 5.3L.
Why this matters on the GM 5.3L V8
Some 5.3L engines are known to consume oil, commonly linked to piston rings and oil being drawn through the PCV system. We measure consumption before recommending repairs.
Symptoms owners notice
- Low oil between changes
- Fouled spark plugs
- Blue smoke
What we check
- Measured consumption test
- Spark plug inspection
- PCV and valve cover check
- Compression and leak-down
Repair work involved
- PCV-related repairs
- Ring repair or engine replacement when confirmed